VIR Vulnerability Intelligence Relay

CVE-2016-2830

medium
Published 2016-08-05 · Modified 2026-05-06
💬 Discuss on Community ✚ Propose mitigation
CVSS v3
4.3
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CVSS v4 NEW
—
not yet in upstream
VIR risk
4.3

Description

Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 preserve the network connection used for favicon resource retrieval after the associated browser window is closed, which makes it easier for remote web servers to track users by observing network traffic from multiple IP addresses.

Predictions

Exploit likelihood
53%
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
OSVersionStatusFixed in
suse slesaffected
debian debiansidfixed48.0-1
debian debianbookwormfixed45.3.0esr-1
debian debianbullseyefixed45.3.0esr-1
debian debianforkyfixed45.3.0esr-1
debian debiantrixiefixed45.3.0esr-1

Application impact
VendorProductVersionsFixed
mozilla mozillafirefox{"endIncluding":"47.0.1"}
mozilla mozillafirefox45.1.0
mozilla mozillafirefox45.1.1
mozilla mozillafirefox45.2.0
mozilla mozillafirefox45.3.0

References

CWEs

CWE-200

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

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