CVE-2025-10256

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.5 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 78% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
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 NULL pointer dereference vulnerability exists in FFmpeg’s Firequalizer filter (libavfilter/af_firequalizer.c) due to a missing check on the return value of av_malloc_array() in the config_input() function. An attacker could exploit this by tricking a victim into processing a crafted media file with the Firequalizer filter enabled, causing the application to dereference a NULL pointer and crash, leading to denial of service.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
24%
KEV
Not listed

Published

February 18, 2026

Last Modified

June 17, 2026

Advisory Details (4)

Auto-updated Aug 7, 2026
Patch available. Sources: redhat, github_commit.
github_commit

commit d3be186ed1bc (FFmpeg/FFmpeg)

Fix landed in FFmpeg/FFmpeg commit d3be186ed1bc — awaiting tagged release

https://github.com/FFmpeg/FFmpeg/commit/d3be186ed1bcdcf2c093d6b13a0e66dc5132be2a
github_commit

commit a25462482c02 (FFmpeg/FFmpeg)

Fix landed in FFmpeg/FFmpeg commit a25462482c02 — awaiting tagged release

https://github.com/FFmpeg/FFmpeg/commit/a25462482c02c004d685a8fcf2fa63955aaa0931
redhat Patch Available

2394495 – (CVE-2025-10256) CVE-2025-10256 ffmpeg: NULL pointer dereference in Firequalizer filter (libavfilter/af_firequalizer.c)

https://bugzilla.redhat.com/show_bug.cgi?id=2394495
redhat Patch Available

CVE-2025-10256 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2025-10256

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
ffmpeg7:4.3.2-0+deb11u2 ... 7:4.3.9-0+deb11u1 (12 versions)7:4.3.9-0+deb11u2—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
ffmpeg7:5.1.3-1 ... 7:9.0.1-1 (59 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
ffmpeg7:7.1.1-17:7.1.2-0+deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
ffmpeg7:7.1.1-17:7.1.2-1—

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 10× in last 7d / 30× 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. 2026-09-20 20:14 UTCEPSS rescore
  2. 2026-09-20 20:14 UTCEPSS rescore
  3. 2026-09-19 15:41 UTCEPSS rescore
  4. 2026-09-18 20:36 UTCOSV refresh
  5. 2026-09-18 19:27 UTCEPSS rescore
  6. 2026-09-18 19:26 UTCEPSS rescore
  7. 2026-09-16 14:06 UTCEPSS rescore
  8. 2026-09-16 14:06 UTCEPSS rescore
  9. 2026-09-16 05:13 UTCEPSS rescore
  10. 2026-09-15 03:08 UTCEPSS rescore
  11. 2026-09-13 16:45 UTCEPSS rescore
  12. 2026-09-12 14:59 UTCEPSS rescore
  13. 2026-09-11 14:51 UTCEPSS rescore
  14. 2026-09-11 09:35 UTCEPSS rescore
  15. 2026-09-10 09:33 UTCEPSS rescore
  16. 2026-09-06 13:46 UTCEPSS rescore
  17. 2026-09-04 13:59 UTCEPSS rescore
  18. 2026-09-04 05:05 UTCEPSS rescore
  19. 2026-09-02 14:10 UTCEPSS rescore
  20. 2026-09-01 13:52 UTCEPSS rescore
  21. 2026-08-30 23:50 UTCOSV refresh
  22. 2026-08-30 19:16 UTCEPSS rescore
  23. 2026-08-30 19:16 UTCEPSS rescore
  24. 2026-08-30 01:21 UTCEPSS rescore
  25. 2026-08-28 21:39 UTCEPSS rescore
Show 54 more
  1. 2026-08-27 14:24 UTCEPSS rescore
  2. 2026-08-26 14:44 UTCEPSS rescore
  3. 2026-08-25 13:47 UTCEPSS rescore
  4. 2026-08-24 14:15 UTCEPSS rescore
  5. 2026-08-23 00:18 UTCEPSS rescore
  6. 2026-08-21 23:47 UTCEPSS rescore
  7. 2026-08-20 22:54 UTCEPSS rescore
  8. 2026-08-19 17:02 UTCEPSS rescore
  9. 2026-08-18 13:47 UTCEPSS rescore
  10. 2026-08-17 13:46 UTCEPSS rescore
  11. 2026-08-16 14:55 UTCEPSS rescore
  12. 2026-08-16 02:13 UTCEPSS rescore
  13. 2026-08-15 01:29 UTCEPSS rescore
  14. 2026-08-14 09:45 UTCEG score recompute
  15. 2026-08-14 09:45 UTCVendor advisory
  16. 2026-08-14 09:45 UTCGHSA enrichment
  17. 2026-08-13 21:59 UTCEPSS rescore
  18. 2026-08-13 02:01 UTCEG score recompute
  19. 2026-08-13 02:01 UTCVendor advisory
  20. 2026-08-13 02:01 UTCGHSA enrichment
  21. 2026-08-12 13:49 UTCEPSS rescore
  22. 2026-08-11 07:24 UTCEG score recompute
  23. 2026-08-11 07:24 UTCVendor advisory
  24. 2026-08-11 07:24 UTCGHSA enrichment
  25. 2026-08-10 23:58 UTCEPSS rescore
  26. 2026-08-09 14:05 UTCEG score recompute
  27. 2026-08-09 14:05 UTCVendor advisory
  28. 2026-08-09 14:05 UTCGHSA enrichment
  29. 2026-08-09 13:45 UTCEPSS rescore
  30. 2026-08-08 16:35 UTCEPSS rescore
  31. 2026-08-07 21:39 UTCEG score recompute
  32. 2026-08-07 21:39 UTCVendor advisory
  33. 2026-08-07 21:39 UTCGHSA enrichment
  34. 2026-08-07 16:26 UTCEPSS rescore
  35. 2026-08-06 13:45 UTCEPSS rescore
  36. 2026-08-06 03:33 UTCEG score recompute
  37. 2026-08-06 03:33 UTCVendor advisory
  38. 2026-08-06 03:33 UTCGHSA enrichment
  39. 2026-08-05 19:16 UTCEPSS rescore
  40. 2026-08-05 19:16 UTCEPSS rescore
  41. 2026-08-04 15:08 UTCEPSS rescore
  42. 2026-08-04 10:37 UTCEPSS rescore
  43. 2026-08-03 10:35 UTCEPSS rescore
  44. 2026-08-02 20:19 UTCEG score recompute
  45. 2026-08-02 20:19 UTCVendor advisory
  46. 2026-08-02 20:19 UTCGHSA enrichment
  47. 2026-08-02 02:25 UTCEPSS rescore
  48. 2026-08-01 04:14 UTCEPSS rescore
  49. 2026-07-30 16:26 UTCEPSS rescore
  50. 2026-07-30 01:29 UTCEPSS rescore
  51. 2026-07-28 15:35 UTCEPSS rescore
  52. 2026-07-27 14:12 UTCEPSS rescore
  53. 2026-07-27 13:28 UTCEG score recompute
  54. 2026-07-27 13:28 UTCGHSA enrichment

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2025-10256?
CVE-2025-10256 is a medium vulnerability published on February 18, 2026. A NULL pointer dereference vulnerability exists in FFmpeg’s Firequalizer filter (libavfilter/affirequalizer.c) due to a missing check on the return value of avmallocarray() in the configinput() function. An attacker could exploit this by tricking a victim into processing a crafted media file with…
When was CVE-2025-10256 disclosed?
CVE-2025-10256 was first published in the National Vulnerability Database on February 18, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-10256 actively exploited?
CVE-2025-10256 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 76.0% of all scored CVEs.
What is the CVSS score of CVE-2025-10256?
CVE-2025-10256 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2025-10256?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-10256, 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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