Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2013-5600

34
FAUCET Score

CVE-2013-5600 describes a critical use-after-free vulnerability in the nsIOService::NewChannelFromURIWithProxyFlags function, affecting Mozilla Firefox, Firefox ESR, Thunderbird, Thunderbird ESR, and SeaMonkey. This flaw, triggered by specially crafted blob: URLs, allows remote attackers to execute arbitrary code with a CVSS score of 10.0, indicating a severe threat with no authentication required and full impact on confidentiality, integrity, and availability. Despite its high severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 24.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
19.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:19.0:*:*:*:*:*:*:*
19.0.1CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:19.0.1:*:*:*:*:*:*:*
19.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:19.0.2:*:*:*:*:*:*:*
20.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:20.0:*:*:*:*:*:*:*

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
5.35%
Probability of exploitation in next 30 days
EPSS Percentile
91.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0535 is in the 86th percentile among its peer group of 51,553 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

Patch Available

Vendor Patches (7)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:17.0.10-1.el5_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:17.0.10-1.el5_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xulrunner-0:17.0.10-1.el5_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:17.0.10-1.el6_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:17.0.10-1.el6_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: xulrunner-0:17.0.10-1.el6_4
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2013-5600Critical

Mozilla: Miscellaneous use-after-free issues found through ASAN fuzzing (MFSA 2013-100)

Oct 29, 2013

References

lists.opensuse.org / opensuse-security-announce/2013-11/msg00005.html
lists.opensuse.org / opensuse-security-announce/2013-11/msg00006.html
lists.opensuse.org / opensuse-security-announce/2013-11/msg00014.html
rhn.redhat.com / errata/RHSA-2013-1476.html
rhn.redhat.com / errata/RHSA-2013-1480.html
bugzilla.mozilla.org / show_bug.cgi
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19172
security.gentoo.org / glsa/201504-01
debian.org / security/2013/dsa-2788
debian.org / security/2013/dsa-2797
mozilla.org / security/announce/2013/mfsa2013-100.html
Vendor Advisory