CVE-2026-37555

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-04-29. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.5Exploit: NoneExposed: 0

A fix is available — apply it.

An issue was discovered in libsndfile 1.2.2 IMA ADPCM codec. The AIFF code path (line 241) was fixed with (sf_count_t) cast, but the WAV code path (line 235) and close path (line 167) were not. When samplesperblock (int) * blocks (int) exceeds INT_MAX, the 32-bit multiplication overflows before being assigned to sf.frames (sf_count_t/int64). With samplesperblock=50000 and blocks=50000, the product 2500000000 overflows to -1794967296. This causes incorrect frame count leading to heap buffer overflow or denial of service. Both values come from the WAV file header and are attacker-controlled. This issue was discovered after an incomplete fix for CVE-2022-33065.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
40.1%
KEV
Not listed

Published

April 29, 2026

Last Modified

July 15, 2026

Advisory Details (2)

Auto-updated Apr 29, 2026
No patch confirmed yet.
generic

UndefinedBehaviorSanitizer: multiple signed integer overflow · Issue #833 · libsndfile/libsndfile · GitHub

https://github.com/libsndfile/libsndfile/issues/833
generic

ima_adpcm: fix int overflow in ima_reader_init() · libsndfile/libsndfile@9a82911 · GitHub

https://github.com/libsndfile/libsndfile/commit/9a829113c88a51e57c1e46473e90609e4b7df151

Vendor Advisories for CVE-2026-37555(16)

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

Patch Availability(10)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatlibsndfile-0:1.0.28-10.el8_4.22026-06-11redhat
redhatlibsndfile-0:1.0.28-14.el8_82026-06-11redhat
redhatlibsndfile-0:1.0.28-13.el8_62026-06-11redhat
redhatlibsndfile-0:1.2.2-5.el10_0.12026-06-10redhat
redhatlibsndfile-0:1.0.31-9.el9_6.12026-06-04redhat
redhatlibsndfile-0:1.0.31-7.el9_2.12026-06-04redhat
redhatlibsndfile-0:1.0.31-8.el9_4.22026-06-04redhat
redhatlibsndfile-0:1.2.2-6.el10_2.12026-05-20redhat
redhatlibsndfile-0:1.0.28-17.el8_102026-05-20redhat
redhatlibsndfile-0:1.0.31-9.el9_8.12026-05-20redhat

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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 36× 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.

Showing the most recent 100 of 139 total refreshes for this CVE.

  1. 2026-07-22 14:08 UTCEPSS rescore
  2. 2026-07-21 15:24 UTCEPSS rescore
  3. 2026-07-20 17:08 UTCEPSS rescore
  4. 2026-07-20 12:34 UTCOSV refresh
  5. 2026-07-19 14:31 UTCEPSS rescore
  6. 2026-07-19 02:29 UTCEPSS rescore
  7. 2026-07-18 10:04 UTCEPSS rescore
  8. 2026-07-16 17:03 UTCEPSS rescore
  9. 2026-07-15 16:57 UTCEPSS rescore
  10. 2026-07-15 16:57 UTCEPSS rescore
  11. 2026-07-15 02:00 UTCEPSS rescore
  12. 2026-07-13 22:30 UTCEPSS rescore
  13. 2026-07-13 06:13 UTCEPSS rescore
  14. 2026-07-13 06:13 UTCEPSS rescore
  15. 2026-07-12 05:46 UTCEPSS rescore
  16. 2026-07-11 08:27 UTCEPSS rescore
  17. 2026-07-09 19:10 UTCEPSS rescore
  18. 2026-07-08 15:15 UTCEPSS rescore
  19. 2026-07-07 13:46 UTCEPSS rescore
  20. 2026-07-06 16:27 UTCEPSS rescore
  21. 2026-07-06 16:27 UTCEPSS rescore
  22. 2026-07-06 02:23 UTCEPSS rescore
  23. 2026-07-06 02:23 UTCEPSS rescore
  24. 2026-07-05 02:30 UTCEPSS rescore
  25. 2026-07-04 06:31 UTCEPSS rescore
Show 75 more
  1. 2026-07-01 15:06 UTCEPSS rescore
  2. 2026-06-30 23:22 UTCEPSS rescore
  3. 2026-06-29 14:06 UTCEPSS rescore
  4. 2026-06-28 14:07 UTCEPSS rescore
  5. 2026-06-28 04:56 UTCEPSS rescore
  6. 2026-06-27 03:08 UTCEPSS rescore
  7. 2026-06-25 13:49 UTCEPSS rescore
  8. 2026-06-25 13:49 UTCEPSS rescore
  9. 2026-06-24 14:05 UTCEPSS rescore
  10. 2026-06-23 21:33 UTCEPSS rescore
  11. 2026-06-23 21:33 UTCEPSS rescore
  12. 2026-06-22 14:25 UTCEPSS rescore
  13. 2026-06-22 14:25 UTCEPSS rescore
  14. 2026-06-21 14:56 UTCEPSS rescore
  15. 2026-06-21 14:56 UTCEPSS rescore
  16. 2026-06-21 01:59 UTCEPSS rescore
  17. 2026-06-19 19:25 UTCEPSS rescore
  18. 2026-06-19 19:25 UTCEPSS rescore
  19. 2026-06-18 17:52 UTCEPSS rescore
  20. 2026-06-18 17:52 UTCEPSS rescore
  21. 2026-06-17 17:53 UTCEPSS rescore
  22. 2026-06-16 17:52 UTCEPSS rescore
  23. 2026-06-15 17:49 UTCEPSS rescore
  24. 2026-06-14 23:18 UTCEPSS rescore
  25. 2026-06-14 22:42 UTCVendor advisory
  26. 2026-06-14 22:42 UTCGHSA enrichment
  27. 2026-06-14 09:27 UTCVendor advisory
  28. 2026-06-14 09:27 UTCGHSA enrichment
  29. 2026-06-13 23:00 UTCEPSS rescore
  30. 2026-06-12 23:12 UTCEPSS rescore
  31. 2026-06-12 23:12 UTCEPSS rescore
  32. 2026-06-12 12:02 UTCVendor advisory
  33. 2026-06-12 12:02 UTCGHSA enrichment
  34. 2026-06-11 22:52 UTCVendor advisory
  35. 2026-06-11 22:52 UTCGHSA enrichment
  36. 2026-06-11 14:00 UTCEPSS rescore
  37. 2026-06-11 09:43 UTCVendor advisory
  38. 2026-06-11 09:42 UTCGHSA enrichment
  39. 2026-06-10 22:18 UTCEPSS rescore
  40. 2026-06-10 19:03 UTCVendor advisory
  41. 2026-06-10 19:03 UTCGHSA enrichment
  42. 2026-06-10 13:22 UTCEPSS rescore
  43. 2026-06-10 05:53 UTCVendor advisory
  44. 2026-06-10 05:53 UTCGHSA enrichment
  45. 2026-06-09 16:43 UTCVendor advisory
  46. 2026-06-09 16:43 UTCGHSA enrichment
  47. 2026-06-09 03:33 UTCVendor advisory
  48. 2026-06-09 03:33 UTCGHSA enrichment
  49. 2026-06-08 14:23 UTCVendor advisory
  50. 2026-06-08 14:22 UTCGHSA enrichment
  51. 2026-06-08 14:17 UTCEPSS rescore
  52. 2026-06-08 14:17 UTCEPSS rescore
  53. 2026-06-08 01:12 UTCVendor advisory
  54. 2026-06-08 01:12 UTCGHSA enrichment
  55. 2026-06-07 15:25 UTCEPSS rescore
  56. 2026-06-07 15:25 UTCEPSS rescore
  57. 2026-06-07 15:25 UTCEPSS rescore
  58. 2026-06-07 12:02 UTCVendor advisory
  59. 2026-06-07 12:02 UTCGHSA enrichment
  60. 2026-06-06 22:52 UTCVendor advisory
  61. 2026-06-06 22:52 UTCGHSA enrichment
  62. 2026-06-06 13:47 UTCEPSS rescore
  63. 2026-06-06 13:47 UTCEPSS rescore
  64. 2026-06-06 09:41 UTCVendor advisory
  65. 2026-06-06 09:41 UTCGHSA enrichment
  66. 2026-06-05 22:47 UTCEPSS rescore
  67. 2026-06-05 22:47 UTCEPSS rescore
  68. 2026-06-05 20:31 UTCVendor advisory
  69. 2026-06-05 20:31 UTCGHSA enrichment
  70. 2026-06-05 07:20 UTCVendor advisory
  71. 2026-06-05 07:20 UTCGHSA enrichment
  72. 2026-06-05 06:10 UTCEPSS rescore
  73. 2026-06-05 06:10 UTCEPSS rescore
  74. 2026-06-04 18:10 UTCVendor advisory
  75. 2026-06-04 18:10 UTCGHSA enrichment

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-37555?
CVE-2026-37555 is a high vulnerability published on April 29, 2026. An issue was discovered in libsndfile 1.2.2 IMA ADPCM codec. The AIFF code path (line 241) was fixed with (sfcountt) cast, but the WAV code path (line 235) and close path (line 167) were not. When samplesperblock (int) * blocks (int) exceeds INTMAX, the 32-bit multiplication overflows before being…
When was CVE-2026-37555 disclosed?
CVE-2026-37555 was first published in the National Vulnerability Database on April 29, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-37555 actively exploited?
CVE-2026-37555 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 40.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-37555?
CVE-2026-37555 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-37555?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-37555, 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.

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