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FKIE_CVE-2025-49179

Vulnerability from fkie_nvd - Published: 2025-06-17 15:15 - Updated: 2026-06-30 11:16
Summary
A flaw was found in the X Record extension. The RecordSanityCheckRegisterClients function does not check for an integer overflow when computing request length, which allows a client to bypass length checks.
References
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:10258
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:10342
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:10343
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:10344
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:10346
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:10347
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:10348
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:10349
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:10350
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:10351
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:10352
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:10355
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:10356
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:10360
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:10370
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:10374
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:10375
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:10376
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:10377
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:10378
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:10381
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:10410
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:9303
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:9304
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:9305
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:9306
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:9392
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:9964
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2025-49179
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2369978
secalert@redhat.comhttps://gitlab.freedesktop.org/xorg/xserver/-/commit/2bde9ca49a8fd9a1e6697d5e7ef837870d66f5d4
secalert@redhat.comhttps://www.x.org/wiki/Development/Security/
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/06/msg00028.html
Impacted products
Vendor Product Version

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://gitlab.freedesktop.org/xorg/xserver",
          "defaultStatus": "unaffected",
          "packageName": "xwayland",
          "product": "xwayland",
          "vendor": "X.Org",
          "versions": [
            {
              "lessThan": "24.1.7",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10.0"
          ],
          "defaultStatus": "affected",
          "packageName": "xorg-x11-server-Xwayland",
          "product": "Red Hat Enterprise Linux 10",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:24.1.5-4.el10_0",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:rhel_els:6"
          ],
          "defaultStatus": "affected",
          "packageName": "tigervnc",
          "product": "Red Hat Enterprise Linux 6 Extended Lifecycle Support  - EXTENSION",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.1.0-25.el6_10.1",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:rhel_aus:7.7::server"
          ],
          "defaultStatus": "affected",
          "packageName": "tigervnc",
          "product": "Red Hat Enterprise Linux 7.7 Advanced Update Support",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.8.0-17.el7_7.1",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:rhel_els:7"
          ],
          "defaultStatus": "affected",
          "packageName": "xorg-x11-server",
          "product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.20.4-32.el7_9",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:rhel_els:7"
          ],
          "defaultStatus": "affected",
          "packageName": "tigervnc",
          "product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.8.0-36.el7_9.2",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:enterprise_linux:8::appstream",
            "cpe:/a:redhat:enterprise_linux:8::crb"
          ],
          "defaultStatus": "affected",
          "packageName": "xorg-x11-server",
          "product": "Red Hat Enterprise Linux 8",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.20.11-26.el8_10",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:enterprise_linux:8::appstream",
            "cpe:/a:redhat:enterprise_linux:8::crb"
          ],
          "defaultStatus": "affected",
          "packageName": "xorg-x11-server-Xwayland",
          "product": "Red Hat Enterprise Linux 8",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:21.1.3-18.el8_10",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:enterprise_linux:8::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "tigervnc",
          "product": "Red Hat Enterprise Linux 8",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.15.0-7.el8_10",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.2::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "tigervnc",
          "product": "Red Hat Enterprise Linux 8.2 Advanced Update Support",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.9.0-15.el8_2.14",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.2::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "xorg-x11-server",
          "product": "Red Hat Enterprise Linux 8.2 Advanced Update Support",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.20.6-4.el8_2",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.4::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "xorg-x11-server",
          "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.20.10-2.el8_4",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.4::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "tigervnc",
          "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.11.0-8.el8_4.13",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.4::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "xorg-x11-server",
          "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.20.10-2.el8_4",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.4::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "tigervnc",
          "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.11.0-8.el8_4.13",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.6::appstream",
            "cpe:/a:redhat:rhel_e4s:8.6::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
            "cpe:/a:redhat:rhel_tus:8.6::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "tigervnc",
          "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.12.0-6.el8_6.14",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.6::appstream",
            "cpe:/a:redhat:rhel_e4s:8.6::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
            "cpe:/a:redhat:rhel_tus:8.6::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "xorg-x11-server-Xwayland",
          "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:21.1.3-2.el8_6.4",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.6::appstream",
            "cpe:/a:redhat:rhel_e4s:8.6::appstream",
            "cpe:/a:redhat:rhel_tus:8.6::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "xorg-x11-server",
          "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.20.11-5.el8_6.3",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.6::appstream",
            "cpe:/a:redhat:rhel_e4s:8.6::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
            "cpe:/a:redhat:rhel_tus:8.6::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "tigervnc",
          "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.12.0-6.el8_6.14",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.6::appstream",
            "cpe:/a:redhat:rhel_e4s:8.6::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
            "cpe:/a:redhat:rhel_tus:8.6::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "xorg-x11-server-Xwayland",
          "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:21.1.3-2.el8_6.4",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.6::appstream",
            "cpe:/a:redhat:rhel_e4s:8.6::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
            "cpe:/a:redhat:rhel_tus:8.6::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "tigervnc",
          "product": "Red Hat Enterprise Linux 8.6 Telecommunications Update Service",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.12.0-6.el8_6.14",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.6::appstream",
            "cpe:/a:redhat:rhel_e4s:8.6::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
            "cpe:/a:redhat:rhel_tus:8.6::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "xorg-x11-server-Xwayland",
          "product": "Red Hat Enterprise Linux 8.6 Telecommunications Update Service",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:21.1.3-2.el8_6.4",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.6::appstream",
            "cpe:/a:redhat:rhel_e4s:8.6::appstream",
            "cpe:/a:redhat:rhel_tus:8.6::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "xorg-x11-server",
          "product": "Red Hat Enterprise Linux 8.6 Telecommunications Update Service",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.20.11-5.el8_6.3",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.6::appstream",
            "cpe:/a:redhat:rhel_e4s:8.6::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
            "cpe:/a:redhat:rhel_tus:8.6::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "tigervnc",
          "product": "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.12.0-6.el8_6.14",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.6::appstream",
            "cpe:/a:redhat:rhel_e4s:8.6::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
            "cpe:/a:redhat:rhel_tus:8.6::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "xorg-x11-server-Xwayland",
          "product": "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:21.1.3-2.el8_6.4",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.6::appstream",
            "cpe:/a:redhat:rhel_e4s:8.6::appstream",
            "cpe:/a:redhat:rhel_tus:8.6::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "xorg-x11-server",
          "product": "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.20.11-5.el8_6.3",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_e4s:8.8::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.8::appstream",
            "cpe:/a:redhat:rhel_tus:8.8::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "xorg-x11-server",
          "product": "Red Hat Enterprise Linux 8.8 Extended Update Support Long-Life Add-On",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.20.11-16.el8_8",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_e4s:8.8::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.8::appstream",
            "cpe:/a:redhat:rhel_tus:8.8::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "xorg-x11-server-Xwayland",
          "product": "Red Hat Enterprise Linux 8.8 Extended Update Support Long-Life Add-On",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:21.1.3-11.el8_8",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_e4s:8.8::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.8::appstream",
            "cpe:/a:redhat:rhel_tus:8.8::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "xorg-x11-server",
          "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.20.11-16.el8_8",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_e4s:8.8::appstream",
            "cpe:/a:redhat:rhel_tus:8.8::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "tigervnc",
          "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.12.0-15.el8_8.14",
              "versionType": "rpm"
            }
          ]
        },
        {
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    {
      "lang": "es",
      "value": "Se encontr\u00f3 una falla en la extensi\u00f3n X Record. La funci\u00f3n RecordSanityCheckRegisterClients no verifica si hay un desbordamiento de enteros al calcular la longitud de la solicitud, lo que permite que un cliente omita las verificaciones de longitud."
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Detection rules are retrieved from Rulezet.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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