CVE-2024-55564: Classic Buffer Overflow
Source CVE Database V5
Not known to be exploited · CVSS 9.8 Critical · fixed in 0.24 : patch affected systems as a priority.
Data as of 26 Oct 2026, 13:47 UTC
- EPSS
- 0.5% chance of exploitation in 30 days – higher than 43% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 0.24
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 9 Dec 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
AI-suggested
- Monitor official POSIX::2008 package repositories and Perl community channels for the release of patches addressing CVE-2024-55564 and apply updates immediately upon availability.
- In the interim, restrict exposure of Perl environments running vulnerable versions by limiting network access and isolating affected systems.
- Implement environment variable sanitization and validation to prevent maliciously crafted environment inputs from triggering the buffer overflow.
- Employ application whitelisting and runtime protection tools to detect and block anomalous code execution attempts originating from Perl processes.
- Conduct thorough code audits and review usage of POSIX::2008 functions, replacing or refactoring vulnerable calls where feasible.
- Enhance monitoring and logging around Perl script execution to detect suspicious activity early.
- Educate development and operations teams about the vulnerability and encourage minimizing reliance on outdated Perl packages.
- Consider deploying intrusion prevention systems (IPS) with signatures targeting exploitation attempts once available. These steps collectively reduce the attack surface and mitigate risk until a formal patch is released.
Description
The POSIX::2008 package before 0.24 for Perl has a potential _execve50c env buffer overflow.