Skip to content
Fencer Intel
critical 9.3

CVE-2013-6021 in the critical feed json

Buffer overflow in WGagent in WatchGuard WSM and Fireware before 11.8 allows remote attackers to execute arbitrary code via a long sessioni…

published 13y ago modified 4mo ago also EUVD-2013-5851

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
11.7%
EPSS 11.7% chance of exploitation in 30 days, percentile 96%
public exploits
1
Exploit-DB

Summary

Buffer overflow in WGagent in WatchGuard WSM and Fireware before 11.8 allows remote attackers to execute arbitrary code via a long sessionid value in a cookie.

Patch / fix

Is CVE-2013-6021 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Timeline

  1. Published
  2. First public exploit (EDB-29273)

Exploit prediction

11.73% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-29273 Watchguard Firewall XTM 11.7.4u1 - Remote Buffer Overflow remote, 2013-10-29
  • funoverip.net https://funoverip.net/2013/10/watchguard-cve-2013-6021-stack-based-buffer-overflow-exploit/ referenced PoC, tagged "exploit" by a source, unverified
  • securityfocus.com http://www.securityfocus.com/bid/63227 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.