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CVE-2011-3658

79
FAUCET Score

CVE-2011-3658 describes an out-of-bounds memory access vulnerability in the SVG implementation of Mozilla Firefox 8.0, Thunderbird 8.0, and SeaMonkey 2.5. This flaw arises from improper interaction with DOMAttrModified event handlers when SVG elements are removed. Rated with a CVSS score of 7.5, this vulnerability is easily exploitable over the network without authentication, potentially leading to denial of service or other unspecified impacts. While not listed in CISA's KEV catalog, a Metasploit module exists for exploitation, indicating readily available exploit code. Despite this, there is no significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
8.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:8.0:*:*:*:*:*:*:*
2.5CPE matchmatch criteria
cpe:2.3:a:mozilla:seamonkey:2.5:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
70.09%
Probability of exploitation in next 30 days
EPSS Percentile
99.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Metasploit: Firefox nsSVGValue Out-of-Bounds Access Vulnerability · Dec 6, 2011
ExploitDB: EDB-18847 · May 9, 2012
This CVE's current EPSS score of 0.7009 is in the 99th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2011-3658Critical

Mozilla: Multiple security flaws fixed in v3.6.25 (Mac) and v9

Dec 20, 2011

References

lists.opensuse.org / opensuse-security-announce/2012-01/msg00001.html
lists.opensuse.org / opensuse-security-announce/2012-01/msg00009.html
lists.opensuse.org / opensuse-updates/2012-03/msg00042.html
osvdb.org / 77953
bugzilla.mozilla.org / show_bug.cgi
secunia.com / advisories/47302
secunia.com / advisories/47334
secunia.com / advisories/48495
secunia.com / advisories/48553
secunia.com / advisories/48823
secunia.com / advisories/49055
exchange.xforce.ibmcloud.com / vulnerabilities/71910
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14664
mandriva.com / security/advisories
mandriva.com / security/advisories
mozilla.org / security/announce/2011/mfsa2011-55.html
Vendor Advisory
securitytracker.com / id
securitytracker.com / id
securitytracker.com / id
ubuntu.com / usn/USN-1401-1