CVE-2026-48977

unknown

Assigned by CNA: github_m

Published 2026-09-17 · Modified 2026-09-17

Discuss on Community Propose mitigation

CVSS v3

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CVSS v4 NEW

7.7

CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

VIR risk

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Description

OpenSlide is a C library for reading whole slide image files. From 3.4.1 until 4.0.1, OpenSlide's parse_level0_xml() processing in src/openslide-vendor-ventana.c accepts nonpositive row or column tile counts from a crafted Ventana BIF file. The invalid counts produce attacker-controlled relative memory offsets and allow arbitrary values to be written at those offsets, affecting all supported platforms and configurations and resulting in a crash or potential arbitrary code execution. This issue is fixed in version 4.0.1.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

Mitigation details

Source: Debian Security Tracker · View original ↗ · DFSG

CVE-2026-48977 NameCVE-2026-48977 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) Debian Bugs1140003 Vulnerable and fixed packages The table below lists information on source packages. Source PackageReleaseVersionStatus openslide (PTS)bullseye3.4.1+dfsg-5vulnerable…

CVE-2026-48977

Name	CVE-2026-48977
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)
Debian Bugs	1140003

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
openslide (PTS)	bullseye	3.4.1+dfsg-5	vulnerable
	bookworm	3.4.1+dfsg-6	vulnerable
	trixie	3.4.1+dfsg-7	vulnerable
	forky, sid	3.4.1+dfsg-9	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
openslide	source	(unstable)	3.4.1+dfsg-9			1140003

Notes

[trixie] - openslide <no-dsa> (Minor issue)
[bookworm] - openslide <no-dsa> (Minor issue)
[bullseye] - openslide <postponed> (Minor issue; can be fixed in next update)
https://github.com/openslide/openslide/security/advisories/GHSA-mxg2-48g7-fmwc

Home - Debian Security - Source (Git)

Apply commands

text fix

Notes

[trixie] - openslide <no-dsa> (Minor issue)[bookworm] - openslide <no-dsa> (Minor issue)[bullseye] - openslide <postponed> (Minor issue; can be fixed in next update)https://github.com/openslide/openslide/security/advisories/GHSA-mxg2-48g7-fmwc

OS impact

Debian Mixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`3.4.1+dfsg-7+deb13u1`
sid	Fixed	`3.4.1+dfsg-8`
forky	Fixed	`3.4.1+dfsg-9`
bullseye	Affected	—
bookworm	Fixed	`3.4.1+dfsg-6+deb12u1`

References

CWEs

CWE-123 CWE-823 CWE-1284

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

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