CVE-2025-43240

high

Published 2025-08-13 · Modified 2025-08-13

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

—

CVSS v4 NEW

—

not yet in upstream

VIR risk

8.0

Description

A logic issue was addressed with improved checks. This issue is fixed in Safari 18.6, macOS Sequoia 15.6. A download's origin may be incorrectly associated.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

Mitigation details

Source: Debian Security Tracker · View original ↗ · DFSG

CVE-2025-43240 NameCVE-2025-43240 DescriptionA logic issue was addressed with improved checks. This issue is fixed in Safari 18.6, macOS Sequoia 15.6. A download's origin may be incorrectly associated. SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) ReferencesDLA-4276-1, DSA-5978-1…

CVE-2025-43240

Name	CVE-2025-43240
Description	A logic issue was addressed with improved checks. This issue is fixed in Safari 18.6, macOS Sequoia 15.6. A download's origin may be incorrectly associated.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-4276-1, DSA-5978-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
webkit2gtk (PTS)	bullseye	2.44.2-1~deb11u1	vulnerable
	bullseye (security)	2.50.6-1~deb11u1	fixed
	bookworm, bookworm (security)	2.50.6-1~deb12u1	fixed
	trixie (security), trixie	2.52.3-2~deb13u1	fixed
	forky	2.52.3-2	fixed
	sid	2.52.4-1	fixed
wpewebkit (PTS)	bullseye (security), bullseye	2.38.6-1~deb11u1	vulnerable
	bookworm	2.38.6-1	vulnerable
	trixie	2.48.3-1	vulnerable
	forky	2.52.3-1	fixed
	sid	2.52.4-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin
webkit2gtk	source	bullseye	2.48.5-1~deb11u1	DLA-4276-1
webkit2gtk	source	bookworm	2.48.5-1~deb12u1	DSA-5978-1
webkit2gtk	source	trixie	2.48.5-1~deb13u1	DSA-5978-1
webkit2gtk	source	(unstable)	2.48.5-1
wpewebkit	source	(unstable)	2.48.5-1

Notes

[trixie] - wpewebkit <ignored> (wpewebkit not covered by security support in trixie)
[bookworm] - wpewebkit <ignored> (wpewebkit not covered by security support in Bookworm)
[bullseye] - wpewebkit <ignored> (wpewebkit >= 2.40 can no longer be sensibly backported)
https://webkitgtk.org/security/WSA-2025-0005.html

Home - Debian Security - Source (Git)

Apply commands

text fix

Notes

[trixie] - wpewebkit <ignored> (wpewebkit not covered by security support in trixie)[bookworm] - wpewebkit <ignored> (wpewebkit not covered by security support in Bookworm)[bullseye] - wpewebkit <ignored> (wpewebkit >= 2.40 can no longer be sensibly backported)https://webkitgtk.org/security/WSA-2025-0005.html

OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`2.48.5-1~deb13u1`
sid	Fixed	`2.48.5-1`
forky	Fixed	`2.48.5-1`
bullseye	Fixed	`2.48.5-1~deb11u1`
bookworm	Fixed	`2.48.5-1~deb12u1`

Red Hat Fixed 2 releases

Version	Status	Fixed in
9	Fixed	—
8	Fixed	—

Rocky Linux Fixed 2 releases

Version	Status	Fixed in
9	Fixed	—
8	Fixed	—

References

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

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