CVE-2025-2814
Crypt-CBC: Crypt::CBC versions between 1.21 and 3.04 for Perl may use insecure rand() function for cryptographic functions
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · April 13, 2025
Updated · November 21, 2025
Description
A flaw was found in Crypt::CBC. Affected versions of Perl may use the rand() function as the default source of entropy, which is not cryptographically secure, for cryptographic functions. This issue affects operating systems where "/dev/urandom'" is unavailable. In that case, Crypt::CBC will fall back to using the insecure rand() function.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 4.8CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE-338 · Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)