CVE-2026-52721

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-06-15. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
5.3
EG Score
5.3(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity53% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

Published

June 15, 2026

Last Modified

June 15, 2026

Advisory Details (3)

Auto-updated Jun 19, 2026
Patch available. Sources: redhat.
generic

GStreamer / gstreamer · GitLab

https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5106
redhat

2486732 – (CVE-2026-52721) CVE-2026-52721 gstreamer1-plugins-bad-free: GStreamer: Multiple out-of-bounds reads in pcapparse IPv4/TCP header parsing

https://bugzilla.redhat.com/show_bug.cgi?id=2486732
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-52721

Vendor Advisories for CVE-2026-52721(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
gst-plugins-bad1.01.18.4-3 ... 1.29.2-2 (110 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
gst-plugins-bad1.01.22.0-4 ... 1.29.2-2 (95 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
gst-plugins-bad1.01.26.10-1 ... 1.29.2-2 (39 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
gst-plugins-bad1.01.26.10-1 ... 1.28.4-1 (30 versions)1.28.5-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 5× in last 7d / 34× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 158 total refreshes for this CVE.

  1. 2026-09-14 03:42 UTCEG score recompute
  2. 2026-09-14 03:42 UTCGHSA enrichment
  3. 2026-09-13 16:47 UTCEPSS rescore
  4. 2026-09-11 14:53 UTCEPSS rescore
  5. 2026-09-10 09:35 UTCEPSS rescore
  6. 2026-09-08 22:01 UTCEPSS rescore
  7. 2026-09-06 13:47 UTCEPSS rescore
  8. 2026-09-04 05:06 UTCEPSS rescore
  9. 2026-09-02 14:12 UTCEPSS rescore
  10. 2026-09-01 13:54 UTCEPSS rescore
  11. 2026-09-01 04:40 UTCEPSS rescore
  12. 2026-08-30 22:58 UTCEG score recompute
  13. 2026-08-30 22:58 UTCGHSA enrichment
  14. 2026-08-30 19:17 UTCEPSS rescore
  15. 2026-08-30 01:22 UTCEPSS rescore
  16. 2026-08-28 21:41 UTCEPSS rescore
  17. 2026-08-27 14:25 UTCEPSS rescore
  18. 2026-08-26 14:46 UTCEPSS rescore
  19. 2026-08-25 13:49 UTCEPSS rescore
  20. 2026-08-24 23:34 UTCEG score recompute
  21. 2026-08-24 23:34 UTCGHSA enrichment
  22. 2026-08-23 09:45 UTCEG score recompute
  23. 2026-08-23 09:45 UTCGHSA enrichment
  24. 2026-08-23 00:19 UTCEPSS rescore
  25. 2026-08-21 23:49 UTCEPSS rescore
Show 75 more
  1. 2026-08-21 17:44 UTCEG score recompute
  2. 2026-08-21 17:44 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 16:21 UTCEG score recompute
  5. 2026-08-20 16:21 UTCGHSA enrichment
  6. 2026-08-19 17:04 UTCEPSS rescore
  7. 2026-08-19 13:14 UTCEG score recompute
  8. 2026-08-19 13:14 UTCGHSA enrichment
  9. 2026-08-17 13:47 UTCEPSS rescore
  10. 2026-08-16 22:59 UTCEG score recompute
  11. 2026-08-16 22:59 UTCGHSA enrichment
  12. 2026-08-16 14:56 UTCEPSS rescore
  13. 2026-08-16 02:14 UTCEPSS rescore
  14. 2026-08-15 23:14 UTCEG score recompute
  15. 2026-08-15 23:14 UTCGHSA enrichment
  16. 2026-08-15 01:30 UTCEPSS rescore
  17. 2026-08-14 21:49 UTCGHSA enrichment
  18. 2026-08-13 22:04 UTCEG score recompute
  19. 2026-08-13 22:04 UTCGHSA enrichment
  20. 2026-08-13 22:00 UTCEPSS rescore
  21. 2026-08-12 19:06 UTCEG score recompute
  22. 2026-08-12 19:06 UTCGHSA enrichment
  23. 2026-08-12 13:51 UTCEPSS rescore
  24. 2026-08-11 19:21 UTCEG score recompute
  25. 2026-08-11 19:21 UTCGHSA enrichment
  26. 2026-08-11 00:00 UTCEPSS rescore
  27. 2026-08-10 19:37 UTCGHSA enrichment
  28. 2026-08-09 18:39 UTCEG score recompute
  29. 2026-08-09 18:39 UTCGHSA enrichment
  30. 2026-08-09 13:46 UTCEPSS rescore
  31. 2026-08-08 18:55 UTCEG score recompute
  32. 2026-08-08 18:55 UTCGHSA enrichment
  33. 2026-08-08 16:37 UTCEPSS rescore
  34. 2026-08-07 19:10 UTCEG score recompute
  35. 2026-08-07 19:10 UTCGHSA enrichment
  36. 2026-08-06 19:26 UTCEG score recompute
  37. 2026-08-06 19:26 UTCGHSA enrichment
  38. 2026-08-06 13:47 UTCEPSS rescore
  39. 2026-08-05 19:41 UTCEG score recompute
  40. 2026-08-05 19:41 UTCGHSA enrichment
  41. 2026-08-05 19:17 UTCEPSS rescore
  42. 2026-08-04 15:42 UTCEG score recompute
  43. 2026-08-04 15:42 UTCGHSA enrichment
  44. 2026-08-04 10:39 UTCEPSS rescore
  45. 2026-08-03 10:36 UTCEPSS rescore
  46. 2026-08-03 08:58 UTCGHSA enrichment
  47. 2026-08-02 08:36 UTCGHSA enrichment
  48. 2026-08-01 08:51 UTCEG score recompute
  49. 2026-08-01 08:51 UTCGHSA enrichment
  50. 2026-08-01 04:16 UTCEPSS rescore
  51. 2026-07-31 04:56 UTCEG score recompute
  52. 2026-07-31 04:56 UTCGHSA enrichment
  53. 2026-07-30 16:28 UTCEPSS rescore
  54. 2026-07-30 05:11 UTCEG score recompute
  55. 2026-07-30 05:11 UTCGHSA enrichment
  56. 2026-07-30 01:30 UTCEPSS rescore
  57. 2026-07-29 03:24 UTCEG score recompute
  58. 2026-07-29 03:24 UTCGHSA enrichment
  59. 2026-07-28 15:37 UTCEPSS rescore
  60. 2026-07-28 01:53 UTCEG score recompute
  61. 2026-07-28 01:53 UTCGHSA enrichment
  62. 2026-07-26 20:13 UTCEG score recompute
  63. 2026-07-26 20:13 UTCGHSA enrichment
  64. 2026-07-26 14:54 UTCEPSS rescore
  65. 2026-07-24 14:18 UTCEPSS rescore
  66. 2026-07-23 14:18 UTCEPSS rescore
  67. 2026-07-23 03:19 UTCEG score recompute
  68. 2026-07-22 14:08 UTCEPSS rescore
  69. 2026-07-20 17:08 UTCEPSS rescore
  70. 2026-07-19 14:31 UTCEPSS rescore
  71. 2026-07-19 14:31 UTCEPSS rescore
  72. 2026-07-16 22:56 UTCGHSA enrichment
  73. 2026-07-16 17:03 UTCEPSS rescore
  74. 2026-07-15 22:41 UTCGHSA enrichment
  75. 2026-07-15 16:57 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-52721?
CVE-2026-52721 is a medium vulnerability published on June 15, 2026. 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…
When was CVE-2026-52721 disclosed?
CVE-2026-52721 was first published in the National Vulnerability Database on June 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-52721 actively exploited?
CVE-2026-52721 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 98.7% of all scored CVEs.
What is the CVSS score of CVE-2026-52721?
CVE-2026-52721 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-52721?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-52721, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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