CVE-2011-2207 Denial of service in dirmngr

What is CVE-2011-2207?

CVE-2011-2207 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 27 Nov 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

dirmngr before 2.1.0 improperly handles certain system calls, which allows remote attackers to cause a denial of service (DOS) via a specially-crafted certificate.

Weakness: CWE-295

Which versions are affected by CVE-2011-2207?

It affects 3 products.

Products include Debian Debian Linux, Gnupg Gnupg, Redhat Enterprise Linux.

How do I fix CVE-2011-2207?

No fix has been published for CVE-2011-2207 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2011-2207 being exploited?

There is no known exploitation of CVE-2011-2207 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

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• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-5j88-3pcx-mp3f.