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CVE-2026-24881

Quick assessment

Affected
GnuPG GnuPG
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GNUPG是美国GNU社区的一套开源的加密软件，采用GNU通用公共许可证。该软件支持公钥、对称加密、散列等算法。 GnuPG 2.5.17之前版本存在安全漏洞，该漏洞源于特制的CMS EnvelopedData消息可能导致gpg-agent在处理PKDECRYPT--kem=CMS时发生基于栈的缓冲区溢出，可能导致拒绝服务或远程代码执行。

CVSS 8.1 · High EPSS 1.84% · P78

Affected Version Matrix 1

VendorProduct Version RangeStatus
GnuPG GnuPG 2.5.13< 2.5.17 affected
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I. Basic Information for CVE-2026-24881

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
GNUPG 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNUPG是美国GNU社区的一套开源的加密软件，采用GNU通用公共许可证。该软件支持公钥、对称加密、散列等算法。 GnuPG 2.5.17之前版本存在安全漏洞，该漏洞源于特制的CMS EnvelopedData消息可能导致gpg-agent在处理PKDECRYPT--kem=CMS时发生基于栈的缓冲区溢出，可能导致拒绝服务或远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
GnuPG GnuPG 2.5.13 ~ 2.5.17 -

II. Public POCs for CVE-2026-24881

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III. Intelligence Information for CVE-2026-24881

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Mailing List Discussions for CVE-2026-24881 (1)

Same Patch Batch · GnuPG · 2026-01-27 · 3 CVEs total

CVE-2026-24882 8.4 HIGH GNUPG 安全漏洞
CVE-2026-24883 3.7 LOW GNUPG 代码问题漏洞

IV. Related Vulnerabilities

Same product: GnuPG
Same vendor: GnuPG
Same weakness: CWE-121

V. Comments for CVE-2026-24881

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