CVE-2026-1940

Name: CVE-2026-1940
Creator: NVD / NIST
Published: 2026-03-23T22:16:25.043+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.22%

Last modified Jun 17, 2026

CVE-2026-1940 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An incomplete fix for CVE-2024-47778 allows an out-of-bounds read in gst_wavparse_adtl_chunk() function. The patch added a size validation check lsize + 8 > size, but it does not account for the GST_ROUND_UP_2(lsize) used in the actual offset calculation. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

Description

An incomplete fix for CVE-2024-47778 allows an out-of-bounds read in gst_wavparse_adtl_chunk() function. The patch added a size validation check lsize + 8 > size, but it does not account for the GST_ROUND_UP_2(lsize) used in the actual offset calculation. When lsize is an odd number, the parser advances more bytes than validated, causing OOB read.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.22%

13.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Freedesktop	Gst-Plugins-Good	1.0.0
Gstreamer	Gstreamer	< 1.28.1
Debian	Debian Linux	11.0
Debian	Debian Linux	12.0
Redhat	Enterprise Linux	7.0
Redhat	Enterprise Linux	8.0
Redhat	Enterprise Linux	9.0
Redhat	Enterprise Linux	10.0

References

https://access.redhat.com/security/cve/CVE-2026-1940Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2436932Issue Tracking, Vendor Advisory
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/4854Broken Link
https://gstreamer.freedesktop.org/security/sa-2026-0001.htmlVendor Advisory
https://security-tracker.debian.org/tracker/CVE-2026-1940Third Party Advisory

Timeline

Published: Mar 23, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-1940?

How severe is CVE-2026-1940?

CVE-2026-1940 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.

How do I fix CVE-2026-1940?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-1940?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST