CVE-2026-75904

LOWPre-NVD 3.33.3—
EchelonGraph scoreMEDIUM confidence

Score 3.3 from GitHub Security Advisory published 2026-08-18. The CNA's CVSS baseline 3.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this weekElevated
3.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 3.3Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

libmodplug through 0.8.9.1 contains an out-of-bounds read in pat_smplooped in src/load_pat.cpp. The function validates only the upper bound of its sample index against MAXSMP and then subtracts one before indexing the 191-byte static array pat_loops, so an index of zero reads pat_loops[-1], one byte before the array. The index is the smpno field of a parsed MIDI event, which is initialised to zero and only later overwritten from a program-change parameter, so an event reaching the note test before an instrument is assigned carries zero. A 32-byte MIDI file supplied to the library's public ModPlug_Load entry point drives the path through CSoundFile::Create, CSoundFile::ReadMID, and MID_ReadPatterns to the read. The byte read out of bounds determines whether a note event is treated as looping, so adjacent static storage influences playback state.

CVSS v3
3.3
EG Score
3.3LOWmedium confidence
EG Risk
31
EG Risk 31/100CISA SSVC

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
Severity33% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
5th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

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

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 18, 2026

Last Modified

September 24, 2026

References (5)

Vendor Advisories for CVE-2026-75904(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
libmodplug1:0.8.9.0-3, 1:0.8.9.0-4
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
libmodplug1:0.8.9.0-3, 1:0.8.9.0-4
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
libmodplug1:0.8.9.0-3
  • every version up to 1:0.8.9.0-4: fixed in 1:0.8.9.0-4
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 41× 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. 2026-10-04 23:22 UTCEPSS rescore
  2. 2026-10-04 09:17 UTCEG score recompute
  3. 2026-10-04 09:17 UTCGHSA enrichment
  4. 2026-10-03 14:26 UTCEPSS rescore
  5. 2026-10-01 19:50 UTCEPSS rescore
  6. 2026-10-01 03:18 UTCEG score recompute
  7. 2026-10-01 03:18 UTCGHSA enrichment
  8. 2026-09-29 15:24 UTCEPSS rescore
  9. 2026-09-28 13:52 UTCEPSS rescore
  10. 2026-09-27 21:18 UTCEG score recompute
  11. 2026-09-27 21:18 UTCGHSA enrichment
  12. 2026-09-27 13:48 UTCEPSS rescore
  13. 2026-09-26 15:59 UTCEPSS rescore
  14. 2026-09-26 00:28 UTCEPSS rescore
  15. 2026-09-24 14:59 UTCEG score recompute
  16. 2026-09-24 14:59 UTCGHSA enrichment
  17. 2026-09-24 14:04 UTCEPSS rescore
  18. 2026-09-23 17:54 UTCEPSS rescore
  19. 2026-09-22 16:01 UTCEPSS rescore
  20. 2026-09-21 21:09 UTCEPSS rescore
  21. 2026-09-21 20:49 UTCEG score recompute
  22. 2026-09-21 20:49 UTCGHSA enrichment
  23. 2026-09-18 19:28 UTCEPSS rescore
  24. 2026-09-18 14:50 UTCEG score recompute
  25. 2026-09-18 14:50 UTCGHSA enrichment
Show 43 more
  1. 2026-09-16 14:08 UTCEPSS rescore
  2. 2026-09-16 05:15 UTCEPSS rescore
  3. 2026-09-15 08:51 UTCEG score recompute
  4. 2026-09-15 08:51 UTCGHSA enrichment
  5. 2026-09-15 03:12 UTCEPSS rescore
  6. 2026-09-12 15:02 UTCEPSS rescore
  7. 2026-09-12 02:52 UTCEG score recompute
  8. 2026-09-12 02:52 UTCGHSA enrichment
  9. 2026-09-11 14:53 UTCEPSS rescore
  10. 2026-09-10 09:35 UTCEPSS rescore
  11. 2026-09-08 22:01 UTCEPSS rescore
  12. 2026-09-08 20:53 UTCEG score recompute
  13. 2026-09-08 20:53 UTCGHSA enrichment
  14. 2026-09-07 10:26 UTCEG score recompute
  15. 2026-09-07 10:26 UTCGHSA enrichment
  16. 2026-09-06 13:48 UTCEPSS rescore
  17. 2026-09-04 05:07 UTCEPSS rescore
  18. 2026-09-04 02:19 UTCEG score recompute
  19. 2026-09-04 02:18 UTCGHSA enrichment
  20. 2026-09-02 14:12 UTCEPSS rescore
  21. 2026-09-01 13:54 UTCEPSS rescore
  22. 2026-09-01 04:40 UTCEPSS rescore
  23. 2026-09-01 04:40 UTCEPSS rescore
  24. 2026-08-31 20:17 UTCEG score recompute
  25. 2026-08-31 20:17 UTCGHSA enrichment
  26. 2026-08-30 19:18 UTCEPSS rescore
  27. 2026-08-30 19:17 UTCEPSS rescore
  28. 2026-08-28 21:42 UTCEPSS rescore
  29. 2026-08-28 10:31 UTCEG score recompute
  30. 2026-08-28 10:31 UTCGHSA enrichment
  31. 2026-08-27 14:25 UTCEPSS rescore
  32. 2026-08-26 14:47 UTCEPSS rescore
  33. 2026-08-25 04:30 UTCEG score recompute
  34. 2026-08-25 04:30 UTCGHSA enrichment
  35. 2026-08-24 14:18 UTCEPSS rescore
  36. 2026-08-21 23:49 UTCEPSS rescore
  37. 2026-08-21 22:32 UTCEG score recompute
  38. 2026-08-21 22:32 UTCGHSA enrichment
  39. 2026-08-20 22:56 UTCEPSS rescore
  40. 2026-08-19 17:04 UTCEPSS rescore
  41. 2026-08-18 16:33 UTCEG score recompute
  42. 2026-08-18 15:30 UTCEG score recompute
  43. 2026-08-18 15:29 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-75904?
CVE-2026-75904 is a low vulnerability published on August 18, 2026. libmodplug through 0.8.9.1 contains an out-of-bounds read in patsmplooped in src/loadpat.cpp. The function validates only the upper bound of its sample index against MAXSMP and then subtracts one before indexing the 191-byte static array patloops, so an index of zero reads patloops[-1], one byte…
When was CVE-2026-75904 disclosed?
CVE-2026-75904 was first published on August 18, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-75904 actively exploited?
CVE-2026-75904 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-75904?
CVE-2026-75904 has a CVSS base score of 3.3 (the CNA's own assessment, by vulncheck; NVD's own analysis pending).
How do I remediate CVE-2026-75904?
A fix for CVE-2026-75904 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-75904 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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