CVE-2014-1559

medium

Published 2014-07-23 · Modified 2026-05-06

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

—

CVSS v4 NEW

—

not yet in upstream

VIR risk

4.3

Description

Mozilla Firefox before 31.0 and Thunderbird before 31.0 allow remote attackers to cause a denial of service (X.509 certificate parsing outage) via a crafted certificate that does not use UTF-8 character encoding in a required context, a different vulnerability than CVE-2014-1558.

Predictions

Exploit likelihood

20%

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.

Application impact

Vendor	Product	Versions
mozilla	firefox	`{"endIncluding":"30.0"}`
mozilla	thunderbird	`{"endIncluding":"24.7"}`
mozilla	thunderbird	`24.0`
mozilla	thunderbird	`24.0.1`
mozilla	thunderbird	`24.1`
mozilla	thunderbird	`24.1.1`
mozilla	thunderbird	`24.2`
mozilla	thunderbird	`24.3`
mozilla	thunderbird	`24.4`
mozilla	thunderbird	`24.5`
mozilla	thunderbird	`24.6`

References

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

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