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CVE-2013-0764

29
FAUCET Score

CVE-2013-0764 describes a critical thread safety vulnerability in the nsSOCKSSocketInfo::ConnectToProxy function affecting Mozilla Firefox, Firefox ESR, Thunderbird, Thunderbird ESR, and SeaMonkey. This flaw, rated with a CVSS score of 9.3, allows remote attackers to execute arbitrary code through crafted data, such as malicious email content, due to improper handling of SSL sessions. Despite its high severity and potential for complete compromise of confidentiality, integrity, and availability, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 17.0.3CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 19.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 2.16CPE matchmatch criteria
cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*
< 17.0.3CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
< 17.0.3CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird_esr:*:*:*:*:*:*:*:*

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
3.15%
Probability of exploitation in next 30 days
EPSS Percentile
86.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0315 is in the 45th percentile among its peer group of 8,920 CVEs.

Social Chatter

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-2013-0764Important

Mozilla: Crash due to handling of SSL on threads (MFSA 2013-07)

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%3A16715
Third Party Advisory
mozilla.org / security/announce/2013/mfsa2013-07.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