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
39.7%
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 9× in last 7d / 39× 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 154 total refreshes for this CVE.

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

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 39.7% 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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