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CVE-2013-0771

25
FAUCET Score

CVE-2013-0771 is a heap-based buffer overflow in the gfxTextRun::ShrinkToLigatureBoundaries function affecting Mozilla Firefox, Firefox ESR, Thunderbird, Thunderbird ESR, and SeaMonkey. With a CVSS score of 9.3, this vulnerability is critical, allowing remote attackers to execute arbitrary code via a crafted document with low attack complexity and no authentication required. There is no evidence of active exploitation, public exploit code, or significant community discussion for this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 18.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
>= 10.0, < 10.0.12CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
>= 17.0, < 17.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 2.15CPE matchmatch criteria
cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*
< 17.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
5.33%
Probability of exploitation in next 30 days
EPSS Percentile
91.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0533 is in the 61st percentile among its peer group of 8,920 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 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

Patch Available

Vendor Patches (1)

mozillapatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2013-0771Critical

Mozilla: Use-after-free and buffer overflow issues found using Address Sanitizer (MFSA 2013-02)

Jan 8, 2013

References

lists.opensuse.org / opensuse-security-announce/2013-01/msg00006.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2013-01/msg00007.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2013-01/msg00010.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2013-01/msg00017.html
Mailing ListThird Party Advisory
bugzilla.mozilla.org / show_bug.cgi
Issue TrackingPatchVendor Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17019
Third Party Advisory
mozilla.org / security/announce/2013/mfsa2013-02.html
Vendor Advisory
ubuntu.com / usn/USN-1681-1
Third Party Advisory
ubuntu.com / usn/USN-1681-2
Third Party Advisory
ubuntu.com / usn/USN-1681-4
Third Party Advisory