CVE-2026-58049

HIGHPre-NVD 8.68.6
EchelonGraph scoreMEDIUM confidence

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

Score 8.6 from GitHub Security Advisory (severity: HIGH) published 2026-06-28. A secondary CVSS source baseline 8.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
8.6EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 8.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

FFmpeg's RASC video decoder (decode_dlta in libavcodec/rasc.c) performs 32-bit reads and writes at the row cursor before the NEXT_LINE row-boundary check and validates the DLTA region in pixel rather than byte units, so a DLTA run on a PAL8 frame can access several bytes past the row allocation. A crafted media stream using the RASC FourCC, decoded by libavcodec, triggers a bitstream-controlled out-of-bounds heap write and adjacent out-of-bounds read, leading to memory corruption.

CVSS v3
8.6
EG Score
8.6HIGHmedium confidence
EG Risk
54
EG Risk 54/100

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 (value × EchelonGraph’s weight)
Severity86% × 45%
The EG Score, 8.6 of 10.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
40th
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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

June 28, 2026

Last Modified

September 1, 2026

Advisory Details (3)

Auto-updated Jun 28, 2026
Patch available.
Web page

FFmpeg - Out-of-Bounds Write in RASC Decoder decode_dlta() | Advisories | VulnCheck

https://www.vulncheck.com/advisories/ffmpeg-out-of-bounds-write-in-rasc-decoder-decode-dlta
Web page

exploitarium/ffmpeg-rasc-dlta-calc-poc at main · bikini/exploitarium · GitHub

https://github.com/bikini/exploitarium/tree/main/ffmpeg-rasc-dlta-calc-poc
Web page

FFmpeg/libavcodec/rasc.c at master · FFmpeg/FFmpeg · GitHub

https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/rasc.c

Vendor Advisories for CVE-2026-58049(20)

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

Patch Availability(11)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulibswscale5 (7:4.4.2-0ubuntu0.22.04.1+esm16) @ jammy2026-09-23ubuntu
redhatrhaiis/vllm-spyre-rhel9:17895024932026-09-17redhat
redhatrhaiis/vllm-rocm-rhel9:17895043712026-09-17redhat
redhatrhaiis/model-opt-cuda-rhel9:17895082872026-09-17redhat
redhatrhaiis/vllm-cuda-rhel9:17895827762026-09-17redhat
redhatrhaiis/vllm-cuda-rhel9:17878605802026-08-31redhat
redhatrhaiis/model-opt-cuda-rhel9:17877721572026-08-31redhat
redhatrhaiis/vllm-rocm-rhel9:17878848732026-08-31redhat
redhatrhoai/odh-th06-rocm64-torch291-py312-rhel9:17870764812026-08-27redhat
redhatffmpeg-0:6.1.6-3.el9ai2026-08-10redhat
redhatffmpeg-0:6.1.6-1.el9ai2026-07-22redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
ffmpeg7:4.3.2-0+deb11u2 ... 7:9.0-1 (92 versions)
  • every version on: no fix on record
—
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 ... 7:9.0.2-1 (24 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
ffmpeg7:7.1.1-1 ... 7:9.0.1-1 (19 versions)
  • every version up to 7:9.0.2-1: fixed in 7:9.0.2-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(10)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 10× in last 7d / 42× 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.

Showing the most recent 100 of 364 refreshes on record for this CVE.

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. None are among the latest 100 rows. The 264 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 19:37 UTCEG score recompute
  2. 2026-10-11 16:52 UTCEG score recompute
  3. 2026-10-11 14:14 UTCEG score recompute
  4. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  6. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  7. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  8. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  9. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  10. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  11. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  12. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  13. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  14. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  15. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  16. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  17. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  18. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  19. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  20. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  21. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  22. 2026-09-23 07:39 UTCEG score recompute
  23. 2026-09-23 07:39 UTCVendor advisory
  24. 2026-09-23 07:39 UTCGHSA enrichmentGHSA-mjxr-6gqf-w78h · GitHub severity HIGH · GitHub CVSS 8.6
  25. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 21st percentile
Show 75 more
  1. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  2. 2026-09-18 07:06 UTCEG score recompute
  3. 2026-09-18 07:06 UTCVendor advisory
  4. 2026-09-18 07:06 UTCGHSA enrichmentGHSA-mjxr-6gqf-w78h · GitHub severity HIGH · GitHub CVSS 8.6
  5. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  6. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  7. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  8. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  9. 2026-09-14 00:55 UTCEG score recompute
  10. 2026-09-14 00:55 UTCVendor advisory
  11. 2026-09-14 00:55 UTCGHSA enrichmentGHSA-mjxr-6gqf-w78h · GitHub severity HIGH · GitHub CVSS 8.6
  12. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  13. 2026-09-13 09:27 UTCVendor advisory
  14. 2026-09-13 09:27 UTCGHSA enrichmentGHSA-mjxr-6gqf-w78h · GitHub severity HIGH · GitHub CVSS 8.6
  15. 2026-09-12 15:18 UTCEG score recompute
  16. 2026-09-12 15:18 UTCVendor advisory
  17. 2026-09-12 15:18 UTCGHSA enrichmentGHSA-mjxr-6gqf-w78h · GitHub severity HIGH · GitHub CVSS 8.6
  18. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  19. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  20. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  21. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  22. 2026-09-06 14:49 UTCEG score recompute
  23. 2026-09-06 14:49 UTCVendor advisory
  24. 2026-09-06 14:49 UTCGHSA enrichmentGHSA-mjxr-6gqf-w78h · GitHub severity HIGH · GitHub CVSS 8.6
  25. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  26. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  27. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  28. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  29. 2026-09-01 13:42 UTCEG score recompute
  30. 2026-09-01 13:42 UTCVendor advisory
  31. 2026-09-01 13:42 UTCGHSA enrichmentGHSA-mjxr-6gqf-w78h · GitHub severity HIGH · GitHub CVSS 8.6
  32. 2026-09-01 12:18 UTCEG score recompute
  33. 2026-09-01 12:18 UTCVendor advisory
  34. 2026-09-01 12:18 UTCGHSA enrichmentGHSA-mjxr-6gqf-w78h · GitHub severity HIGH · GitHub CVSS 8.6
  35. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  36. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  37. 2026-08-30 19:11 UTCEG score recompute
  38. 2026-08-30 19:11 UTCVendor advisory
  39. 2026-08-30 19:11 UTCGHSA enrichmentGHSA-mjxr-6gqf-w78h · GitHub severity HIGH · GitHub CVSS 8.6
  40. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  41. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  42. 2026-08-28 16:45 UTCEG score recompute
  43. 2026-08-28 16:45 UTCVendor advisory
  44. 2026-08-28 16:45 UTCGHSA enrichmentGHSA-mjxr-6gqf-w78h · GitHub severity HIGH · GitHub CVSS 8.6
  45. 2026-08-28 15:58 UTCVendor advisory
  46. 2026-08-28 15:58 UTCGHSA enrichmentGHSA-mjxr-6gqf-w78h · GitHub severity HIGH · GitHub CVSS 8.6
  47. 2026-08-27 22:51 UTCEG score recompute
  48. 2026-08-27 22:51 UTCVendor advisory
  49. 2026-08-27 22:51 UTCGHSA enrichmentGHSA-mjxr-6gqf-w78h · GitHub severity HIGH · GitHub CVSS 8.6
  50. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  51. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  52. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  53. 2026-08-25 00:28 UTCEG score recompute
  54. 2026-08-25 00:28 UTCVendor advisory
  55. 2026-08-25 00:28 UTCGHSA enrichmentGHSA-mjxr-6gqf-w78h · GitHub severity HIGH · GitHub CVSS 8.6
  56. 2026-08-24 12:44 UTCEG score recompute
  57. 2026-08-24 12:44 UTCVendor advisory
  58. 2026-08-24 12:44 UTCGHSA enrichmentGHSA-mjxr-6gqf-w78h · GitHub severity HIGH · GitHub CVSS 8.6
  59. 2026-08-23 20:40 UTCVendor advisory
  60. 2026-08-23 20:40 UTCGHSA enrichmentGHSA-mjxr-6gqf-w78h · GitHub severity HIGH · GitHub CVSS 8.6
  61. 2026-08-23 08:56 UTCEG score recompute
  62. 2026-08-23 08:56 UTCVendor advisory
  63. 2026-08-23 08:56 UTCGHSA enrichmentGHSA-mjxr-6gqf-w78h · GitHub severity HIGH · GitHub CVSS 8.6
  64. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  65. 2026-08-22 20:59 UTCVendor advisory
  66. 2026-08-22 20:59 UTCGHSA enrichmentGHSA-mjxr-6gqf-w78h · GitHub severity HIGH · GitHub CVSS 8.6
  67. 2026-08-22 09:15 UTCEG score recompute
  68. 2026-08-22 09:15 UTCVendor advisory
  69. 2026-08-22 09:15 UTCGHSA enrichmentGHSA-mjxr-6gqf-w78h · GitHub severity HIGH · GitHub CVSS 8.6
  70. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  71. 2026-08-21 17:23 UTCVendor advisory
  72. 2026-08-21 17:23 UTCGHSA enrichmentGHSA-mjxr-6gqf-w78h · GitHub severity HIGH · GitHub CVSS 8.6
  73. 2026-08-21 05:31 UTCEG score recompute
  74. 2026-08-21 05:31 UTCVendor advisory
  75. 2026-08-21 05:31 UTCGHSA enrichmentGHSA-mjxr-6gqf-w78h · GitHub severity HIGH · GitHub CVSS 8.6

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-58049?
CVE-2026-58049 is a high-severity vulnerability; its CVE record was published on June 28, 2026. FFmpeg's RASC video decoder (decodedlta in libavcodec/rasc.c) performs 32-bit reads and writes at the row cursor before the NEXTLINE row-boundary check and validates the DLTA region in pixel rather than byte units, so a DLTA run on a PAL8 frame can access several bytes past the row allocation. A…
When was CVE-2026-58049 made public?
CVE-2026-58049 was made public on June 26, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on June 28, 2026. EchelonGraph's copy of the record carries a last-modified date of September 1, 2026; the record at its source may have been updated since.
Is CVE-2026-58049 actively exploited?
CVE-2026-58049 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-58049?
CVE-2026-58049 has a CVSS base score of 8.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-58049?
A fix for CVE-2026-58049 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-58049 are linked in the Vendor Advisories panel on this page.

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