CVE-2026-75904

LOWPre-NVD 3.33.3
EchelonGraph scoreMEDIUM confidence

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

Score 3.3 from GitHub Security Advisory (severity: MODERATE) published 2026-08-18. A secondary CVSS source baseline 3.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Elevated

Also known asEUVD-2026-60967 (ENISA EUVD) · GHSA-prc8-cg98-hxwc (GitHub Security Advisories)Source: ENISA EUVD

3.3EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 3.3Exploit: No code on recordExposed 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 31/100

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)
Severity33% × 45%
Impact severity (EG Severity): CVSS 3.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
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 public PoC (CISA Vulnrichment) · Automatable no (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.
EPSS PROB
0.2%
EPSS %ILE
8th
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 (3.3): severity, escalated by confirmed exploitation. This CVE's 3.3 is its impact severity (EG Severity), not escalated.

EG Severity
3.3 LOWCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-07). 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: 60 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 public PoC (CISA Vulnrichment) · Automatable no (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)60 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 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

August 18, 2026

Last Modified

October 22, 2026

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 8× in last 7d / 31× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 117 rows on record for this CVE, as 99 entries (1 repeat merged).

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 100 is merged into the row it repeats. The 17 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  2. 2026-11-11 16:40 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  3. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  4. 2026-11-09 16:36 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  5. 2026-11-08 16:40 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  6. 2026-11-07 19:21 UTCGHSA enrichmentGHSA-prc8-cg98-hxwc · GitHub severity MODERATE · GitHub CVSS 3.3
  7. 2026-11-07 19:21 UTCEchelonGraph re-scored
  8. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  9. 2026-11-06 16:39 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  10. 2026-11-05 16:38 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  11. 2026-11-04 16:36 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  12. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  13. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  14. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  15. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  16. 2026-10-29 18:24 UTCEchelonGraph re-scored
  17. 2026-10-29 18:24 UTCGHSA enrichmentGHSA-prc8-cg98-hxwc · GitHub CVSS 3.3
  18. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  19. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  20. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  21. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  22. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  23. 2026-10-25 14:02 UTCEchelonGraph re-scored
  24. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  25. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.2% · 7th percentile
Show 74 more
  1. 2026-10-22 22:29 UTCEchelonGraph re-scored
  2. 2026-10-22 22:29 UTCGHSA enrichmentGHSA-prc8-cg98-hxwc · GitHub CVSS 3.3
  3. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  4. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  5. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  6. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  7. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  8. 2026-10-18 03:13 UTCEchelonGraph re-scored
  9. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  10. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  11. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  12. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  13. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  14. 2026-10-12 15:38 UTCEchelonGraph re-scored
  15. 2026-10-11 19:24 UTCEchelonGraph re-scored
  16. 2026-10-11 16:40 UTCEchelonGraph re-scored
  17. 2026-10-11 13:59 UTCEchelonGraph re-scored
  18. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  19. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  20. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  21. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  22. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  23. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  24. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  25. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  26. 2026-10-04 09:17 UTCEchelonGraph re-scored
  27. 2026-10-04 09:17 UTCGHSA enrichmentGHSA-prc8-cg98-hxwc · GitHub CVSS 3.3
  28. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  29. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  30. 2026-10-01 03:18 UTCEchelonGraph re-scored
  31. 2026-10-01 03:18 UTCGHSA enrichmentGHSA-prc8-cg98-hxwc · GitHub CVSS 3.3
  32. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  33. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  34. 2026-09-27 21:18 UTCEchelonGraph re-scored
  35. 2026-09-27 21:18 UTCGHSA enrichmentGHSA-prc8-cg98-hxwc · GitHub CVSS 3.3
  36. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  37. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  38. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  39. 2026-09-24 14:59 UTCEchelonGraph re-scored
  40. 2026-09-24 14:59 UTCGHSA enrichmentGHSA-prc8-cg98-hxwc · GitHub CVSS 3.3
  41. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  42. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  43. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  44. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  45. 2026-09-21 20:49 UTCEchelonGraph re-scored
  46. 2026-09-21 20:49 UTCGHSA enrichmentGHSA-prc8-cg98-hxwc · GitHub CVSS 3.3
  47. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  48. 2026-09-18 14:50 UTCEchelonGraph re-scored
  49. 2026-09-18 14:50 UTCGHSA enrichmentGHSA-prc8-cg98-hxwc · GitHub CVSS 3.3
  50. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  51. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  52. 2026-09-15 08:51 UTCEchelonGraph re-scored
  53. 2026-09-15 08:51 UTCGHSA enrichmentGHSA-prc8-cg98-hxwc · GitHub CVSS 3.3
  54. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  55. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  56. 2026-09-12 02:52 UTCEchelonGraph re-scored
  57. 2026-09-12 02:52 UTCGHSA enrichmentGHSA-prc8-cg98-hxwc · GitHub CVSS 3.3
  58. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  59. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  60. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  61. 2026-09-08 20:53 UTCEchelonGraph re-scored
  62. 2026-09-08 20:53 UTCGHSA enrichmentGHSA-prc8-cg98-hxwc · GitHub CVSS 3.3
  63. 2026-09-07 10:26 UTCEchelonGraph re-scored
  64. 2026-09-07 10:26 UTCGHSA enrichmentGHSA-prc8-cg98-hxwc · GitHub CVSS 3.3
  65. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  66. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  67. 2026-09-04 02:19 UTCEchelonGraph re-scored
  68. 2026-09-04 02:18 UTCGHSA enrichmentGHSA-prc8-cg98-hxwc · GitHub CVSS 3.3
  69. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  70. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  71. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  72. 2026-08-31 20:17 UTCEchelonGraph re-scored
  73. 2026-08-31 20:17 UTCGHSA enrichmentGHSA-prc8-cg98-hxwc · GitHub CVSS 3.3
  74. 2026-08-30 19:18 UTCEPSS rescoreEPSS 0.1% · 1st percentile

Frequently asked(5)

What is CVE-2026-75904?
CVE-2026-75904 is a low-severity vulnerability; its CVE record was published on August 18, 2026. 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…
When was CVE-2026-75904 made public?
CVE-2026-75904 was made public on August 14, 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 August 18, 2026. EchelonGraph's copy of the record carries a last-modified date of October 22, 2026; the record at its source may have been updated since.
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 (8th 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 (a secondary CVSS source that NVD displays; 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-75904

Explore →

Is Your Infrastructure Affected by CVE-2026-75904?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.