CVE-2026-52721: gst-plugins-bad1.0 Out-of-bounds Read
Vulnerability summary
CVE-2026-52721 is a medium (CVSS 5.3) Out-of-bounds Read vulnerability in gst-plugins-bad1.0. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 3.4% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 7 · Related 7Timeline
- 15-06-2026PublishedVulnerability first disclosed.
- 15-06-2026Last modifiedVulnerability information updated.
Description
Multiple out-of-bounds read vulnerabilities were found in GStreamer's pcapparse element. Malformed PCAP records can trigger reads beyond buffer boundaries during IPv4/TCP header parsing. This element is primarily used in debugging pipelines, limiting real-world exposure. A local attacker could trick a user into processing a specially crafted PCAP file, potentially leading to a crash or information disclosure.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:H
- NVDNIST5.3MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:H
EPSS trend
Probability
0.15%
Chance of exploitation in the next 30 days
Percentile
3%
Versus all other CVEs
30-day change
+0.04 pp
From 0.11% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian1 product
- gst-plugins-bad1.0All versions (No fix recorded) | < 1.28.5-1
Ubuntu1 product
- gst-plugins-bad1.0All versions (No fix recorded)
2 vendors · 2 products
