CVE-2010-4777

CVE-2010-4777 describes a denial-of-service vulnerability in the Perl_reg_numbered_buff_fetch function within Perl versions 5.10.0, 5.12.0, and 5.14.0, particularly when debugging is enabled. Attackers can trigger an assertion failure and application exit by providing crafted input containing specific regular expressions, as demonstrated by crashes in SpamAssassin and OCSInventory. This vulnerability has a CVSS score of 4.3, indicating a medium attack complexity and partial availability impact, with no confidentiality or integrity impact. While there is no evidence of active exploitation or Metasploit/Nuclei modules, exploit code is publicly available on ExploitDB, and the CVE has received minimal community discussion or media coverage.