CVE-2005-3962: Perl

Medium severity, CVSS 4.6. EPSS: 1.4% chance of exploitation in the next 30 days.

Integer overflow in the format string functionality (Perl_sv_vcatpvfn) in Perl 5.9.2 and 5.8.6 Perl allows attackers to overwrite arbitrary memory and possibly execute arbitrary code via format string specifiers with large values, which causes an integer wrap and leads to a buffer overflow, as demonstrated using format string vulnerabilities in Perl applications.

Affected products

• Perl Perl: version 5.8.6 only; version 5.9.2 only

Published 2005-12-01. Last modified 2026-06-16.