CVE-2026-24881
8.1 · HIGHOverview
CVE-2026-24881 is a high-severity vulnerability affecting gnupg gnupg. It was published on January 27, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from gnupg. Update gnupg to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| gnupg | gnupg | >= 2.5.13, < 2.5.17 | Affected |
| gpg4win | gpg4win | >= 5.0.0, < 5.0.1 | Affected |
Frequently Asked Questions
What is CVE-2026-24881?
CVE-2026-24881 is a high-severity vulnerability affecting gnupg gnupg. It was published on January 27, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).
How severe is CVE-2026-24881?
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-24881?
Check the references section for vendor advisories and patches from gnupg. Update gnupg to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-24881?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-24881 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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