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CVE-2011-2987

33
FAUCET Score

CVE-2011-2987 describes a critical heap-based buffer overflow in the Almost Native Graphics Layer Engine (ANGLE), specifically impacting the WebGL implementation in Mozilla Firefox 4.x-5, Thunderbird before 6, and SeaMonkey 2.x before 2.3. This vulnerability carries a CVSS score of 10.0, indicating a severe risk where an unauthenticated remote attacker could execute arbitrary code with low attack complexity. Despite its high severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
4.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:4.0:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:4.0:beta1:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:4.0:beta10:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:4.0:beta11:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:4.0:beta12:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

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

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

Exploit Intelligence

EPSS Score
5.49%
Probability of exploitation in next 30 days
EPSS Percentile
91.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0549 is in the 86th 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

References

lists.opensuse.org / opensuse-security-announce/2011-08/msg00023.html
bugzilla.mozilla.org / show_bug.cgi
secunia.com / advisories/49055
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14285
mozilla.org / security/announce/2011/mfsa2011-29.html
Vendor Advisory
mozilla.org / security/announce/2011/mfsa2011-31.html
mozilla.org / security/announce/2011/mfsa2011-33.html
securityfocus.com / bid/49226