CVE-2026-24881_CVE-2026-24881

8.1 / 10

HIGH

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

Description

In GnuPG before 2.5.17, a crafted CMS (S/MIME) EnvelopedData message carrying an oversized wrapped session key can cause a stack-based buffer overflow in gpg-agent during PKDECRYPT--kem=CMS handling. This can easily be leveraged for denial of service; however, there is also memory corruption that could lead to remote code execution.

Basic Information

ID CVE-2026-24881

Source mitre

Published Jan 27, 2026 at 18:36

Modified Jan 27, 2026 at 18:52

Affected Product

Vendor GnuPG

Product GnuPG

Version 2.5.13

Affected Versions GnuPG GnuPG 2.5.13

CWE Classification

CWE-121

References

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    "lastseen": "",
    "description": "In GnuPG before 2.5.17, a crafted CMS (S/MIME) EnvelopedData message carrying an oversized wrapped session key can cause a stack-based buffer overflow in gpg-agent during PKDECRYPT--kem=CMS handling. This can easily be leveraged for denial of service; however, there is also memory corruption that could lead to remote code execution.",
    "published": "2026-01-27T18:36:56.727Z",
    "modified": "2026-01-27T18:52:54.994Z",
    "type": "cve",
    "title": "CVE-2026-24881",
    "source": "mitre",
    "references": "https://www.openwall.com/lists/oss-security/2026/01/27/8\nhttps://dev.gnupg.org/T8044",
    "id": "CVE-2026-24881",
    "bulletinFamily": "",
    "cwe": [
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    ],
    "cvelist": null,
    "sourceData": "GnuPG GnuPG 2.5.13",
    "sourceHref": "",
    "cvss": {
        "score": 8.1,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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            "baseSeverity": "",
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            "privilegesRequired": "",
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            "confidentialityImpact": "",
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            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "GnuPG",
    "version": "2.5.13",
    "vendor": "GnuPG",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}