CVE-2026-96611

HIGHNVD 7.87.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This high-severity CVE scores 7.8 under NVD CVSS v3. EPSS exploit probability: 0.1% (1st percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 6.9 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2026-09-23) is not newer than that change (2026-10-15), so it does not.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this week

Also known asEUVD-2026-85311 (ENISA EUVD) · GHSA-g222-rpm9-83x6 (GitHub Security Advisories)Source: ENISA EUVD

7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

FFmpeg before 9.0 has a signed integer overflow in libavformat/mov.c. In mov_read_ispe(), uint32_t width/height values from a crafted HEIF ispe box are stored into signed int fields without bounds checking, allowing values exceeding INT_MAX to become negative. In read_image_grid(), accumulating these values causes signed integer overflow (undefined behavior per C17 section 6.5), which on x86 wraps to a small positive value, bypassing downstream validity checks.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity78% × 45%
Impact severity (EG Severity): CVSS 7.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
1st
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.8): severity, escalated by confirmed exploitation. This CVE's 7.8 is its impact severity (EG Severity), not escalated.

EG Severity
7.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-03). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

September 23, 2026

Last Modified

October 15, 2026

Advisory Details (2)

Auto-updated Sep 23, 2026
Patch available.
Web page

avformat/mov: reject out of range ispe dimensions, avoid overflow summing HEIF tile dimensions · 059eb2e853 - FFmpeg/FFmpeg - FFmpeg Forgejo

https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/059eb2e853c1f62b8df1b73be9318061a7a21b0b
Web page

#23455 - avformat/mov: reject out of range ispe dimensions, avoid overflow summing HEIF tile dimensions - FFmpeg/FFmpeg - FFmpeg Forgejo

https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23455

Vendor Advisories for CVE-2026-96611(1)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
ffmpeg7:5.1.3-1 ... 7:9.0.2-1 (60 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
ffmpeg7:7.1.1-1 ... 7:7.1.4-0+deb13u1 (6 versions)
  • every version up to 7:7.1.5-0+deb13u1: fixed in 7:7.1.5-0+deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
ffmpeg7:7.1.1-1 ... 7:8.1.1-4 (15 versions)
  • every version up to 7:8.1.2-1: fixed in 7:8.1.2-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 45× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 97 is merged into the row it repeats.

  1. 2026-11-08 16:41 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  2. 2026-11-07 16:40 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  3. 2026-11-05 16:39 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  4. 2026-11-04 16:37 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  5. 2026-11-04 05:25 UTCEG score recompute
  6. 2026-11-04 05:25 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub severity MODERATE · GitHub CVSS 6.9
  7. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  8. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  9. 2026-11-01 16:36 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  10. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  11. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  12. 2026-10-28 20:56 UTCEG score recompute
  13. 2026-10-28 20:56 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  14. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  15. 2026-10-26 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  16. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  17. 2026-10-25 13:48 UTCEG score recompute
  18. 2026-10-24 16:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  19. 2026-10-23 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  20. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  21. 2026-10-22 04:16 UTCEG score recompute
  22. 2026-10-22 04:16 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  23. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  24. 2026-10-20 16:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  25. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
Show 71 more
  1. 2026-10-18 02:57 UTCEG score recompute
  2. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  3. 2026-10-16 16:45 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  4. 2026-10-15 19:48 UTCEG score recompute▲ 0.90
  5. 2026-10-15 19:47 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  6. 2026-10-15 19:45 UTCNVD updateCVSS v3 → 7.8 · severity → HIGH
  7. 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  8. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  9. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  10. 2026-10-12 14:40 UTCEG score recompute
  11. 2026-10-12 03:51 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  12. 2026-10-11 19:11 UTCEG score recompute
  13. 2026-10-11 16:27 UTCEG score recompute
  14. 2026-10-11 13:50 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  15. 2026-10-11 13:39 UTCEG score recompute
  16. 2026-10-11 03:06 UTCEG score recompute
  17. 2026-10-11 03:05 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  18. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  19. 2026-10-10 02:41 UTCEG score recompute
  20. 2026-10-10 02:41 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  21. 2026-10-09 20:08 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  22. 2026-10-09 02:27 UTCEG score recompute
  23. 2026-10-09 02:27 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  24. 2026-10-08 17:14 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  25. 2026-10-08 02:14 UTCEG score recompute
  26. 2026-10-08 02:14 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  27. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  28. 2026-10-07 02:00 UTCEG score recompute
  29. 2026-10-07 02:00 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  30. 2026-10-06 15:19 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  31. 2026-10-06 01:44 UTCEG score recompute
  32. 2026-10-06 01:44 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  33. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  34. 2026-10-05 01:31 UTCEG score recompute
  35. 2026-10-05 01:31 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  36. 2026-10-04 23:23 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  37. 2026-10-04 01:18 UTCEG score recompute
  38. 2026-10-04 01:17 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  39. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  40. 2026-10-03 01:03 UTCEG score recompute
  41. 2026-10-03 01:03 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  42. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  43. 2026-10-02 00:50 UTCEG score recompute
  44. 2026-10-02 00:49 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  45. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  46. 2026-10-01 00:32 UTCEG score recompute
  47. 2026-10-01 00:32 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  48. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  49. 2026-09-30 00:14 UTCEG score recompute
  50. 2026-09-30 00:14 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  51. 2026-09-28 23:54 UTCEG score recompute
  52. 2026-09-28 23:54 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  53. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  54. 2026-09-27 23:41 UTCEG score recompute
  55. 2026-09-27 23:41 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  56. 2026-09-27 13:49 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  57. 2026-09-26 23:27 UTCEG score recompute
  58. 2026-09-26 23:27 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  59. 2026-09-26 22:56 UTCEG score recompute
  60. 2026-09-26 22:56 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  61. 2026-09-26 21:28 UTCEG score recompute
  62. 2026-09-26 21:28 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  63. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  64. 2026-09-25 21:15 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  65. 2026-09-24 21:01 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  66. 2026-09-24 15:30 UTCEG score recompute
  67. 2026-09-24 15:30 UTCGHSA enrichmentGHSA-g222-rpm9-83x6 · GitHub CVSS 6.9
  68. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  69. 2026-09-23 15:17 UTCEG score recompute
  70. 2026-09-23 14:24 UTCEG score recomputeFirst assessed: 6.9 MEDIUM
  71. 2026-09-23 14:24 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-96611?
CVE-2026-96611 is a high-severity vulnerability; its CVE record was published on September 23, 2026. FFmpeg before 9.0 has a signed integer overflow in libavformat/mov.c. In mov_read_ispe(), uint32_t width/height values from a crafted HEIF ispe box are stored into signed int fields without bounds checking, allowing values exceeding INT_MAX to become negative. In read_image_grid(), accumulating…
When was the CVE record for CVE-2026-96611 published?
The CVE record for CVE-2026-96611 was published on September 23, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 15, 2026; the record at its source may have been updated since.
Is CVE-2026-96611 actively exploited?
CVE-2026-96611 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-96611?
CVE-2026-96611 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-96611?
A fix for CVE-2026-96611 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-96611 are linked in the Vendor Advisories panel on this page.

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