CVE-2011-3658

Status: ModifiedHigh (7.5)—💥 Exploit

The SVG implementation in Mozilla Firefox 8.0, Thunderbird 8.0, and SeaMonkey 2.5 does not properly interact with DOMAttrModified event handlers, which allows remote attackers to cause a denial of service (out-of-bounds memory access) or possibly have unspecified other impact via vectors involving removal of SVG elements.

CVSS

Version: 2.0
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Base score: 7.5

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 70%
Percentile among all scored CVEs: 99
Score date: 10/7/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

Metasploit module (reliable, widely available exploit) · Firefox nsSVGValue Out-of-Bounds Access Vulnerability
Published on Exploit-DB · Mozilla Firefox 7 / 8 < 8.0.1 - nsSVGValue Out-of-Bounds Access (Metasploit) (5/9/2012)

Affected technologies (3)

Mozilla — Firefox Mozilla — Seamonkey Mozilla — Thunderbird

CWEs

CWE-399

References

Raw JSON (NVD)

Show

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  "published": "2011-12-21T04:02:00.897",
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