Vulnerability-Lookup

RHSA-2026:17481

Vulnerability from csaf_redhat - Published: 2026-05-14 09:31 - Updated: 2026-09-01 12:02

Summary

Red Hat Security Advisory: rsync security update

Severity

Important

Notes

Topic: An update for rsync is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details: The rsync utility enables the users to copy and synchronize files locally or across a network. Synchronization with rsync is fast because rsync only sends the differences in files over the network instead of sending whole files. The rsync utility is also used as a mirroring tool. Security Fix(es): * rsync: Rsync: Use-after-free vulnerability in extended attribute handling (CVE-2026-41035) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2026-41035

A flaw was found in rsync. When rsync is configured to handle extended attributes (using the -X or --xattrs option), a remote attacker can exploit a use-after-free vulnerability. This occurs because the receive_xattr function incorrectly processes an untrusted length value during a sorting operation, leading to memory corruption. Successful exploitation can result in a denial of service, causing the rsync process to crash, and may potentially allow for arbitrary code execution.

7.4 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L

CWE-805 - Buffer Access with Incorrect Length Value

Affected products

Fixed 14 products

Product	Version	Remediation
Unresolved product id: BaseOS-8.10.0.Z.MAIN.EUS:rsync-0:3.1.3-25.el8_10.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.10.0.Z.MAIN.EUS:rsync-0:3.1.3-25.el8_10.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.10.0.Z.MAIN.EUS:rsync-0:3.1.3-25.el8_10.s390x	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.10.0.Z.MAIN.EUS:rsync-0:3.1.3-25.el8_10.src	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.10.0.Z.MAIN.EUS:rsync-0:3.1.3-25.el8_10.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.10.0.Z.MAIN.EUS:rsync-daemon-0:3.1.3-25.el8_10.noarch	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.10.0.Z.MAIN.EUS:rsync-debuginfo-0:3.1.3-25.el8_10.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.10.0.Z.MAIN.EUS:rsync-debuginfo-0:3.1.3-25.el8_10.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.10.0.Z.MAIN.EUS:rsync-debuginfo-0:3.1.3-25.el8_10.s390x	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.10.0.Z.MAIN.EUS:rsync-debuginfo-0:3.1.3-25.el8_10.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.10.0.Z.MAIN.EUS:rsync-debugsource-0:3.1.3-25.el8_10.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.10.0.Z.MAIN.EUS:rsync-debugsource-0:3.1.3-25.el8_10.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.10.0.Z.MAIN.EUS:rsync-debugsource-0:3.1.3-25.el8_10.s390x	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.10.0.Z.MAIN.EUS:rsync-debugsource-0:3.1.3-25.el8_10.x86_64	—	Vendor Fix fix Workaround

Threats

Impact Important

References

11 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:17481	self
https://access.redhat.com/security/updates/classi…	external
https://bugzilla.redhat.com/show_bug.cgi?id=2458898	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-41035	self
https://bugzilla.redhat.com/show_bug.cgi?id=2458898	external
https://www.cve.org/CVERecord?id=CVE-2026-41035	external
https://nvd.nist.gov/vuln/detail/CVE-2026-41035	external
https://github.com/RsyncProject/rsync/issues/871	external
https://github.com/RsyncProject/rsync/releases	external
https://www.openwall.com/lists/oss-security/2026/…	external

JSON

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          "product_id": "BaseOS-8.10.0.Z.MAIN.EUS:rsync-debugsource-0:3.1.3-25.el8_10.ppc64le"
        },
        "product_reference": "rsync-debugsource-0:3.1.3-25.el8_10.ppc64le",
        "relates_to_product_reference": "BaseOS-8.10.0.Z.MAIN.EUS"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rsync-debugsource-0:3.1.3-25.el8_10.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)",
          "product_id": "BaseOS-8.10.0.Z.MAIN.EUS:rsync-debugsource-0:3.1.3-25.el8_10.s390x"
        },
        "product_reference": "rsync-debugsource-0:3.1.3-25.el8_10.s390x",
        "relates_to_product_reference": "BaseOS-8.10.0.Z.MAIN.EUS"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rsync-debugsource-0:3.1.3-25.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)",
          "product_id": "BaseOS-8.10.0.Z.MAIN.EUS:rsync-debugsource-0:3.1.3-25.el8_10.x86_64"
        },
        "product_reference": "rsync-debugsource-0:3.1.3-25.el8_10.x86_64",
        "relates_to_product_reference": "BaseOS-8.10.0.Z.MAIN.EUS"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-41035",
      "cwe": {
        "id": "CWE-805",
        "name": "Buffer Access with Incorrect Length Value"
      },
      "discovery_date": "2026-04-16T08:00:54.200357+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2458898"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in rsync. When rsync is configured to handle extended attributes (using the -X or --xattrs option), a remote attacker can exploit a use-after-free vulnerability. This occurs because the receive_xattr function incorrectly processes an untrusted length value during a sorting operation, leading to memory corruption. Successful exploitation can result in a denial of service, causing the rsync process to crash, and may potentially allow for arbitrary code execution.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "rsync: Rsync: Use-after-free vulnerability in extended attribute handling",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is an Important flaw in rsync that allows a remote attacker to cause a denial of service or potentially execute arbitrary code. The vulnerability is present when rsync is used with extended attributes enabled via the `-X` or `--xattrs` option, which is not a default configuration. Exploitation requires the victim to explicitly enable this feature.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
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          "BaseOS-8.10.0.Z.MAIN.EUS:rsync-debugsource-0:3.1.3-25.el8_10.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-41035"
        },
        {
          "category": "external",
          "summary": "RHBZ#2458898",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2458898"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-41035",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-41035"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-41035",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41035"
        },
        {
          "category": "external",
          "summary": "https://github.com/RsyncProject/rsync/issues/871",
          "url": "https://github.com/RsyncProject/rsync/issues/871"
        },
        {
          "category": "external",
          "summary": "https://github.com/RsyncProject/rsync/releases",
          "url": "https://github.com/RsyncProject/rsync/releases"
        },
        {
          "category": "external",
          "summary": "https://www.openwall.com/lists/oss-security/2026/04/16/2",
          "url": "https://www.openwall.com/lists/oss-security/2026/04/16/2"
        }
      ],
      "release_date": "2026-04-16T06:53:05.237000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-05-14T09:31:32+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:17481"
        },
        {
          "category": "workaround",
          "details": "To mitigate this vulnerability, avoid using the -X or --xattrs options with rsync if extended attribute handling is not essential for your operations. Disabling these options prevents the vulnerable code path from being exercised. This may impact functionality that relies on extended attributes.",
          "product_ids": [
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      "scores": [
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          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L",
            "version": "3.1"
          },
          "products": [
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "rsync: Rsync: Use-after-free vulnerability in extended attribute handling"
    }
  ]
}

CVE-2026-41035 (GCVE-0-2026-41035)

Vulnerability from cvelistv5 – Published: 2026-04-16 06:53 – Updated: 2026-09-04 12:04

Summary

In rsync 3.0.1 through 3.4.1, receive_xattr relies on an untrusted length value during a qsort call, leading to a receiver use-after-free. The victim must run rsync with -X (aka --xattrs). On Linux, many (but not all) common configurations are vulnerable. Non-Linux platforms are more widely vulnerable.

Severity

7.4 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-16 12:20 UTC

CWE

CWE-130 - Improper Handling of Length Parameter Inconsistency
CWE-805 - Buffer Access with Incorrect Length Value

Assigner

mitre mitre root

References

30 references

URL	Tags
https://www.openwall.com/lists/oss-security/2026/…
https://github.com/RsyncProject/rsync/releases
https://github.com/RsyncProject/rsync/issues/871
http://www.openwall.com/lists/oss-security/2026/04/16/9
http://www.openwall.com/lists/oss-security/2026/04/22/3
https://access.redhat.com/security/cve/CVE-2026-41035	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2458898	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:25173	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25172	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:59831	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26542	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28887	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:23233	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25044	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:34098	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25181	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:23245	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20696	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19152	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20601	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20602	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20604	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20603	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19368	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:17481	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25170	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25190	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25149	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29197	vendor-advisoryx_refsource_REDHAT

Impacted products

27 products

Vendor	Product	Version
Samba	rsync	Affected: 3.0.1 , ≤ 3.4.1 (semver) cpe:2.3:a:samba:rsync::::::::
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 0:3.4.1-6.el10_2 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux 10.0 Extended Update Support	Unaffected: 0:3.4.1-2.el10_0.2 , < * (rpm) cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat	Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION	Unaffected: 0:3.0.6-12.el6_10.3 , < * (rpm) cpe:/o:redhat:rhel_els:6
Red Hat	Red Hat Enterprise Linux 7 Extended Lifecycle Support	Unaffected: 0:3.1.2-12.el7_9.3 , < * (rpm) cpe:/o:redhat:rhel_els:7
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:3.1.3-25.el8_10 , < * (rpm) cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	Unaffected: 0:3.1.3-12.el8_4.7 , < * (rpm) cpe:/o:redhat:rhel_aus:8.4
Red Hat	Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On	Unaffected: 0:3.1.3-12.el8_4.7 , < * (rpm) cpe:/o:redhat:rhel_eus_long_life:8.4
Red Hat	Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support	Unaffected: 0:3.1.3-14.el8_6.10 , < * (rpm) cpe:/o:redhat:rhel_aus:8.6
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On	Unaffected: 0:3.1.3-14.el8_6.10 , < * (rpm) cpe:/o:redhat:rhel_eus_long_life:8.6
Red Hat	Red Hat Enterprise Linux 8.8 Telecommunications Update Service	Unaffected: 0:3.1.3-20.el8_8.5 , < * (rpm) cpe:/o:redhat:rhel_tus:8.8
Red Hat	Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions	Unaffected: 0:3.1.3-20.el8_8.5 , < * (rpm) cpe:/o:redhat:rhel_e4s:8.8
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:3.2.5-7.el9_8 , < * (rpm) cpe:/a:redhat:enterprise_linux:9 cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions	Unaffected: 0:3.2.3-9.el9_0.5 , < * (rpm) cpe:/a:redhat:rhel_e4s:9.0
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions	Unaffected: 0:3.2.3-19.el9_2.3 , < * (rpm) cpe:/a:redhat:rhel_e4s:9.2
Red Hat	Red Hat Enterprise Linux 9.4 Extended Update Support	Unaffected: 0:3.2.3-19.el9_4.3 , < * (rpm) cpe:/a:redhat:rhel_eus:9.4
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support	Unaffected: 0:3.2.5-3.el9_6.1 , < * (rpm) cpe:/a:redhat:rhel_eus:9.6
Red Hat	Red Hat OpenShift Container Platform 4.12	Unaffected: 412.86.202608241157-0 , < * (rpm) cpe:/a:redhat:openshift:4.12::el8
Red Hat	Red Hat OpenShift Container Platform 4.13	Unaffected: 413.92.202606160406-0 , < * (rpm) cpe:/a:redhat:openshift:4.13::el9
Red Hat	Red Hat OpenShift Container Platform 4.14	Unaffected: 414.92.202606231112-0 , < * (rpm) cpe:/a:redhat:openshift:4.14::el9
Red Hat	Red Hat OpenShift Container Platform 4.15	Unaffected: 415.92.202606030318-0 , < * (rpm) cpe:/a:redhat:openshift:4.15::el9
Red Hat	Red Hat OpenShift Container Platform 4.16	Unaffected: 416.94.202606051757-0 , < * (rpm) cpe:/a:redhat:openshift:4.16::el9
Red Hat	Red Hat OpenShift Container Platform 4.17	Unaffected: 417.94.202606250942-0 , < * (rpm) cpe:/a:redhat:openshift:4.17::el9
Red Hat	Red Hat OpenShift Container Platform 4.18	Unaffected: 418.94.202606051320-0 , < * (rpm) cpe:/a:redhat:openshift:4.18::el9
Red Hat	Red Hat OpenShift Container Platform 4.19	Unaffected: 4.19.9.6.202606031700-0 , < * (rpm) cpe:/a:redhat:openshift:4.19::el9
Red Hat	Red Hat Discovery 2	Unaffected: 1782166952 , < * (rpm) cpe:/a:redhat:discovery:2::el9
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4

Show details on NVD website

JSON

To clipboard

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            "value": "RHSA-2026:29197: Red Hat Discovery 2"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2026-04-16T08:00:54.200Z",
            "value": "Reported to Red Hat."
          },
          {
            "lang": "en",
            "time": "2026-04-16T06:53:05.237Z",
            "value": "Made public."
          }
        ],
        "title": "rsync: Rsync: Use-after-free vulnerability in extended attribute handling",
        "workarounds": [
          {
            "lang": "en",
            "value": "To mitigate this vulnerability, avoid using the -X or --xattrs options with rsync if extended attribute handling is not essential for your operations. Disabling these options prevents the vulnerable code path from being exercised. This may impact functionality that relies on extended attributes."
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              "status": "affected",
              "version": "3.0.1",
              "versionType": "semver"
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            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
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            "confidentialityImpact": "LOW",
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          "descriptions": [
            {
              "cweId": "CWE-130",
              "description": "CWE-130 Improper Handling of Length Parameter Inconsistency",
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              "type": "CWE"
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          ]
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      "providerMetadata": {
        "dateUpdated": "2026-04-16T18:23:49.396Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
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      "references": [
        {
          "url": "https://www.openwall.com/lists/oss-security/2026/04/16/2"
        },
        {
          "url": "https://github.com/RsyncProject/rsync/releases"
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        {
          "url": "https://github.com/RsyncProject/rsync/issues/871"
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    "cveId": "CVE-2026-41035",
    "datePublished": "2026-04-16T06:53:05.237Z",
    "dateReserved": "2026-04-16T06:53:04.777Z",
    "dateUpdated": "2026-09-04T12:04:47.004Z",
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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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.