CVE-2013-6021

CVE-2013-6021 is a critical-severity vulnerability in Watchguard Fireware with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 12% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Description

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.

Frequently asked questions

What is CVE-2013-6021?
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.
How severe is CVE-2013-6021?
CVE-2013-6021 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2013-6021 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-6021?
CVE-2013-6021 primarily affects Watchguard Fireware. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-6021?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2013-6021 published?
CVE-2013-6021 was published on 2013-10-19 and last updated on 2026-06-16.

References

Affected products (12)

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