CVE-2025-55645

MEDIUMPre-NVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-06-15. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

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

A heap buffer overflow in the gf_cenc_set_pssh function (isomedia/drm_sample.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS) via supplying a crafted MP4 file.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
25(Track)
EG Risk 25/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
21%
KEV
Not listed

Published

June 15, 2026

Last Modified

June 16, 2026

Advisory Details (2)

Auto-updated Jun 15, 2026
No patch confirmed yet.
generic

oss-security - CVE-2025-55645: Heap-based Buffer Overflow in GPAC/MP4Box via gf_cenc_set_pssh on crafted MP4 with oversized PSSH payload

http://www.openwall.com/lists/oss-security/2026/06/13/6
generic

sigdevel: "Security Advisory: CVE-2025-55645 - Heap Buffer O…" - Infosec Exchange

https://infosec.exchange/@sigdevel/116736802253007654

Vendor Advisories for CVE-2025-55645(1)

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

Affected Packages

(1 across 1 ecosystem)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
gpac1.0.1+dfsg1-4 ... 2.2.1+dfsg1-3.1~exp1 (13 versions)——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 42× 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 190 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-55645?
CVE-2025-55645 is a medium vulnerability published on June 15, 2026. A heap buffer overflow in the gfcencsetpssh function (isomedia/drmsample.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS) via supplying a crafted MP4 file.
When was CVE-2025-55645 disclosed?
CVE-2025-55645 was first published in the National Vulnerability Database on June 15, 2026, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-55645 actively exploited?
CVE-2025-55645 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 78.9% of all scored CVEs.
What is the CVSS score of CVE-2025-55645?
CVE-2025-55645 has a CVSS v3.1 base score of 5.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2025-55645?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-55645, 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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