# CVE-2026-52721: gst-plugins-bad1.0: Multiple out-of-bounds read vulnerabilities were found in GStreamer's pcapparse element

CVE-2026-52721 is fixed in 10 products on 1 platform, first by DEBIAN-CVE-2026-52721, released June 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-52721
- Priority: Routine
- CVSS: 5.3 (medium)
- EPSS: 0.0011
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 15, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | gst-plugins-bad1.0 Debian 14 | 1.28.5-1 | [DEBIAN-CVE-2026-52721](https://patchblox.com/security/data/fix/linux/debian-cve-2026-52721.md) | Jun 15, 2026 |
| Linux | gstreamer-plugins-bad opensuse-leap 16.0 | 1.26.7-160000.3.1 | [OPENSUSE-SU-2026:21370-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21370-1.md) | Jul 18, 2026 |
| Linux | gstreamer-plugins-bad sles 15.6 | 1.24.0-150600.4.9.1 | [SUSE-SU-2026:3058-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3058-1.md) | Jul 15, 2026 |
| Linux | gstreamer-plugins-bad sles 15.7 | 1.24.0-150600.4.9.1 | [SUSE-SU-2026:3058-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3058-1.md) | Jul 15, 2026 |
| Linux | gstreamer-plugins-bad sles 16.0 | 1.26.7-160000.3.1 | [SUSE-SU-2026:22817-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-22817-1.md) | Jul 18, 2026 |
| Linux | gstreamer1-plugin-openh264 amzn 2023 | 1.24.10-1.amzn2023.0.6 | [ALAS2023-2026-1917](https://patchblox.com/security/data/fix/linux/alas2023-2026-1917.md) | Jul 6, 2026 |
| Linux | gstreamer1-plugin-openh264-debuginfo amzn 2023 | 1.24.10-1.amzn2023.0.6 | [ALAS2023-2026-1917](https://patchblox.com/security/data/fix/linux/alas2023-2026-1917.md) | Jul 6, 2026 |
| Linux | gstreamer1-plugins-bad-free amzn 2023 | 1.24.10-1.amzn2023.0.6 | [ALAS2023-2026-1917](https://patchblox.com/security/data/fix/linux/alas2023-2026-1917.md) | Jul 6, 2026 |
| Linux | gstreamer1-plugins-bad-free-debuginfo amzn 2023 | 1.24.10-1.amzn2023.0.6 | [ALAS2023-2026-1917](https://patchblox.com/security/data/fix/linux/alas2023-2026-1917.md) | Jul 6, 2026 |
| Linux | gstreamer1-plugins-bad-free-debugsource amzn 2023 | 1.24.10-1.amzn2023.0.6 | [ALAS2023-2026-1917](https://patchblox.com/security/data/fix/linux/alas2023-2026-1917.md) | Jul 6, 2026 |
| Linux | gstreamer1-plugins-bad-free-devel amzn 2023 | 1.24.10-1.amzn2023.0.6 | [ALAS2023-2026-1917](https://patchblox.com/security/data/fix/linux/alas2023-2026-1917.md) | Jul 6, 2026 |
| Linux | gstreamer1-plugins-bad-free-libs amzn 2023 | 1.24.10-1.amzn2023.0.6 | [ALAS2023-2026-1917](https://patchblox.com/security/data/fix/linux/alas2023-2026-1917.md) | Jul 6, 2026 |
| Linux | gstreamer1-plugins-bad-free-libs-debuginfo amzn 2023 | 1.24.10-1.amzn2023.0.6 | [ALAS2023-2026-1917](https://patchblox.com/security/data/fix/linux/alas2023-2026-1917.md) | Jul 6, 2026 |

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Data as of 2026-11-10T07:50:38Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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