CVE-2026-53702

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory published 2026-06-11. the CNA's CVSS baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:redhat, epss, ghsa
Trending — 3 sources updated this week
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.5Exploit: NoneExposed: 0

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

A stack buffer overflow flaw was found in the GStreamer H.265 codec parser library (gst-plugins-bad). When parsing a buffering period SEI message, the parser uses an incorrect loop bound derived from cpb_cnt_minus1[i] (the loop index) instead of the sub-layer 0 CPB count cpb_cnt_minus1[0] from the referenced Sequence Parameter Set. A crafted H.265 video file or stream can cause the parser to write beyond the bounds of stack-allocated CPB delay arrays, resulting in a crash or potential stack memory corruption.

CVSS v3
6.5
EG Score
6.5(high)
EPSS
13.5%
KEV
Not listed

Published

June 11, 2026

Last Modified

June 15, 2026

Advisory Details (2)

Auto-updated Jun 12, 2026
Patch available. Sources: redhat.
redhat

2487612 – (CVE-2026-53702) CVE-2026-53702 gstreamer1-plugins-bad-free: GStreamer: Stack buffer overflow in H.265 buffering period SEI parser

https://bugzilla.redhat.com/show_bug.cgi?id=2487612
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-53702

Vendor Advisories for CVE-2026-53702(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 24× in last 7d / 88× 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.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-53702?
CVE-2026-53702 is a medium vulnerability published on June 11, 2026. A stack buffer overflow flaw was found in the GStreamer H.265 codec parser library (gst-plugins-bad). When parsing a buffering period SEI message, the parser uses an incorrect loop bound derived from cpbcntminus1[i] (the loop index) instead of the sub-layer 0 CPB count cpbcntminus1[0] from the…
When was CVE-2026-53702 disclosed?
CVE-2026-53702 was first published in the National Vulnerability Database on June 11, 2026, with the most recent update 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-2026-53702 actively exploited?
CVE-2026-53702 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 13.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-53702?
CVE-2026-53702 has a CVSS v4.0 base score of 6.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-53702?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53702, 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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