CVE-2013-6673

medium

Published 2013-12-11 · Modified 2026-04-29

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CVSS v3

5.9

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS v4 NEW

—

not yet in upstream

VIR risk

5.9

Description

Mozilla Firefox before 26.0, Firefox ESR 24.x before 24.2, Thunderbird before 24.2, and SeaMonkey before 2.23 do not recognize a user's removal of trust from an EV X.509 certificate, which makes it easier for man-in-the-middle attackers to spoof SSL servers in opportunistic circumstances via a valid certificate that is unacceptable to the user.

Predictions

Exploit likelihood

69%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

Fedora Affected 3 releases

Version	Status	Fixed in
20	Affected	—
19	Affected	—
18	Affected	—

SUSE Affected 4 releases

Version	Status	Fixed in
13.1	Affected	—
12.3	Affected	—
12.2	Affected	—
11	Affected	—

Ubuntu Affected 4 releases

Version	Status	Fixed in
13.10	Affected	—
13.04	Affected	—
12.10	Affected	—
12.04	Affected	—

Application impact

Vendor	Product	Versions	Fixed
mozilla	firefox	`{"endExcluding":"26.0"}`	`26.0`
mozilla	seamonkey	`{"endExcluding":"2.23"}`	`2.23`
mozilla	thunderbird	`{"endExcluding":"24.2"}`	`24.2`
suse	suse_linux_enterprise_software_development_kit	`11.0`

References

CWEs

CWE-310

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.