Vulnerability-Lookup

CVE-2026-5121 (GCVE-0-2026-5121)

Vulnerability from cvelistv5 – Published: 2026-03-30 07:47 – Updated: 2026-04-14 16:35

Title

Libarchive: libarchive: arbitrary code execution via integer overflow in iso9660 image processing

Summary

A flaw was found in libarchive. On 32-bit systems, an integer overflow vulnerability exists in the zisofs block pointer allocation logic. A remote attacker can exploit this by providing a specially crafted ISO9660 image, which can lead to a heap buffer overflow. This could potentially allow for arbitrary code execution on the affected system.

Severity ?

7.5 (High)


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

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

redhat

References

URL

Tags

	https://access.redhat.com/security/cve/CVE-2026-5121	vdb-entryx_refsource_REDHAT
	https://bugzilla.redhat.com/show_bug.cgi?id=2452945	issue-trackingx_refsource_REDHAT
	https://github.com/advisories/GHSA-2vwv-vqpv-v8vc
	https://github.com/libarchive/libarchive/pull/2934

Impacted products

Vendor

Product

Version

Red Hat

Red Hat Enterprise Linux 10

cpe:/o:redhat:enterprise_linux:10

Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat Hardened Images	cpe:/a:redhat:hummingbird:1
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4

Date Public ?

2026-03-30 07:44

Credits

Red Hat would like to thank Elhanan Haenel for reporting this issue.

Show details on NVD website

JSON

To clipboard

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GHSA-2VWV-VQPV-V8VC

Vulnerability from github – Published: 2026-03-30 09:31 – Updated: 2026-04-14 18:30

Details

Severity ?

9.8 (Critical)


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

Show details on source website

JSON

To clipboard

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  "affected": [],
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    "CVE-2026-5121"
  ],
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    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-30T08:16:18Z",
    "severity": "CRITICAL"
  },
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  "id": "GHSA-2vwv-vqpv-v8vc",
  "modified": "2026-04-14T18:30:26Z",
  "published": "2026-03-30T09:31:29Z",
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    {
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5121"
    },
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      "url": "https://github.com/libarchive/libarchive/pull/2934"
    },
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      "type": "CVSS_V3"
    }
  ]
}

MSRC_CVE-2026-5121

Vulnerability from csaf_microsoft - Published: 2026-03-02 00:00 - Updated: 2026-04-02 01:04

Summary

Libarchive: libarchive: arbitrary code execution via integer overflow in iso9660 image processing

Notes

Additional Resources: To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

Disclaimer: The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

CVE-2026-5121

9.8 (Critical)


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

None Available There is no fix available for this vulnerability as of now

References

URL

FKIE_CVE-2026-5121

Vulnerability from fkie_nvd - Published: 2026-03-30 08:16 - Updated: 2026-04-14 17:16

Severity ?

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

References

URL	Tags
secalert@redhat.com	https://access.redhat.com/security/cve/CVE-2026-5121	Third Party Advisory
secalert@redhat.com	https://bugzilla.redhat.com/show_bug.cgi?id=2452945
secalert@redhat.com	https://github.com/advisories/GHSA-2vwv-vqpv-v8vc	Third Party Advisory
secalert@redhat.com	https://github.com/libarchive/libarchive/pull/2934	Issue Tracking, Patch

Impacted products

Vendor	Product	Version
libarchive	libarchive	-
redhat	hardened_images	-
redhat	openshift_container_platform	4.0
redhat	enterprise_linux	6.0
redhat	enterprise_linux	7.0
redhat	enterprise_linux	8.0
redhat	enterprise_linux	9.0
redhat	enterprise_linux	10.0

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:libarchive:libarchive:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "6A51945D-40D7-4C28-B0BB-774687265DCE",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:redhat:hardened_images:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "87DEB507-5B64-47D7-9A50-3B87FD1E571F",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "932D137F-528B-4526-9A89-CD59FA1AB0FE",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "2F6AB192-9D7D-4A9A-8995-E53A9DE9EAFC",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "7F6FB57C-2BC7-487C-96DD-132683AEB35D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "D65C2163-CFC2-4ABB-8F4E-CB09CEBD006C",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in libarchive. On 32-bit systems, an integer overflow vulnerability exists in the zisofs block pointer allocation logic. A remote attacker can exploit this by providing a specially crafted ISO9660 image, which can lead to a heap buffer overflow. This could potentially allow for arbitrary code execution on the affected system."
    },
    {
      "lang": "es",
      "value": "Se encontr\u00f3 un fallo en libarchive. En sistemas de 32 bits, existe una vulnerabilidad de desbordamiento de entero en la l\u00f3gica de asignaci\u00f3n de punteros de bloque zisofs. Un atacante remoto puede explotar esto al proporcionar una imagen ISO9660 especialmente dise\u00f1ada, lo que puede llevar a un desbordamiento de b\u00fafer de pila. Esto podr\u00eda permitir potencialmente la ejecuci\u00f3n de c\u00f3digo arbitrario en el sistema afectado."
    }
  ],
  "id": "CVE-2026-5121",
  "lastModified": "2026-04-14T17:16:52.727",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "secalert@redhat.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-30T08:16:18.780",
  "references": [
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://access.redhat.com/security/cve/CVE-2026-5121"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2452945"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/advisories/GHSA-2vwv-vqpv-v8vc"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "url": "https://github.com/libarchive/libarchive/pull/2934"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

CVE-2026-5121 (GCVE-0-2026-5121)

GHSA-2VWV-VQPV-V8VC

MSRC_CVE-2026-5121

FKIE_CVE-2026-5121

Tags

Sightings

Nomenclature