CVE-2026-22891

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-03-03. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A heap-based buffer overflow vulnerability exists in the Intan CLP parsing functionality of The Biosig Project libbiosig 3.9.2 and Master Branch (db9a9a63). A specially crafted Intan CLP file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

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
Severity98% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
47%
KEV
Not listed

Published

March 3, 2026

Last Modified

June 17, 2026

Advisory Details (2)

Auto-updated Sep 14, 2026
No patch confirmed yet.
generic

TALOS-2026-2361 || Cisco Talos Intelligence Group - Comprehensive Threat Intelligence

https://www.talosintelligence.com/vulnerability_reports/TALOS-2026-2361
generic

TALOS-2026-2361 || Cisco Talos Intelligence Group - Comprehensive Threat Intelligence

https://talosintelligence.com/vulnerability_reports/TALOS-2026-2361

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
biosig2.1.2-4 ... 3.9.5-1 (11 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
biosig2.5.0-1 ... 3.9.5-1 (7 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
biosig3.9.0-1, 3.9.5-1——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
biosig3.9.0-13.9.5-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 25× 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. 2026-09-19 20:33 UTCOSV refresh
  2. 2026-09-18 19:27 UTCEPSS rescore
  3. 2026-09-16 14:07 UTCEPSS rescore
  4. 2026-09-16 05:15 UTCEPSS rescore
  5. 2026-09-13 16:47 UTCEPSS rescore
  6. 2026-09-12 15:01 UTCEPSS rescore
  7. 2026-09-11 14:52 UTCEPSS rescore
  8. 2026-09-10 09:34 UTCEPSS rescore
  9. 2026-09-08 22:00 UTCEPSS rescore
  10. 2026-09-07 16:01 UTCEPSS rescore
  11. 2026-09-06 13:47 UTCEPSS rescore
  12. 2026-09-06 13:47 UTCEPSS rescore
  13. 2026-09-04 05:06 UTCEPSS rescore
  14. 2026-09-02 14:11 UTCEPSS rescore
  15. 2026-09-01 13:53 UTCEPSS rescore
  16. 2026-09-01 04:39 UTCEPSS rescore
  17. 2026-09-01 00:04 UTCOSV refresh
  18. 2026-08-30 19:17 UTCEPSS rescore
  19. 2026-08-30 01:22 UTCEPSS rescore
  20. 2026-08-28 21:41 UTCEPSS rescore
  21. 2026-08-27 14:25 UTCEPSS rescore
  22. 2026-08-26 14:46 UTCEPSS rescore
  23. 2026-08-25 13:48 UTCEPSS rescore
  24. 2026-08-23 00:19 UTCEPSS rescore
  25. 2026-08-21 23:49 UTCEPSS rescore
Show 62 more
  1. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-19 17:03 UTCEPSS rescore
  3. 2026-08-18 13:48 UTCEPSS rescore
  4. 2026-08-17 13:47 UTCEPSS rescore
  5. 2026-08-16 14:56 UTCEPSS rescore
  6. 2026-08-16 02:14 UTCEPSS rescore
  7. 2026-08-15 01:30 UTCEPSS rescore
  8. 2026-08-15 00:44 UTCGHSA enrichment
  9. 2026-08-14 21:01 UTCGHSA enrichment
  10. 2026-08-14 16:08 UTCGHSA enrichment
  11. 2026-08-14 12:24 UTCGHSA enrichment
  12. 2026-08-14 08:41 UTCEG score recompute
  13. 2026-08-14 08:41 UTCGHSA enrichment
  14. 2026-08-13 22:00 UTCEPSS rescore
  15. 2026-08-13 04:14 UTCGHSA enrichment
  16. 2026-08-13 00:31 UTCEG score recompute
  17. 2026-08-13 00:31 UTCGHSA enrichment
  18. 2026-08-12 13:50 UTCEPSS rescore
  19. 2026-08-11 23:22 UTCEG score recompute
  20. 2026-08-11 23:22 UTCGHSA enrichment
  21. 2026-08-11 13:42 UTCEPSS rescore
  22. 2026-08-11 05:55 UTCEG score recompute
  23. 2026-08-11 05:55 UTCGHSA enrichment
  24. 2026-08-11 00:00 UTCEPSS rescore
  25. 2026-08-10 13:06 UTCGHSA enrichment
  26. 2026-08-10 08:39 UTCGHSA enrichment
  27. 2026-08-10 04:53 UTCGHSA enrichment
  28. 2026-08-10 01:06 UTCGHSA enrichment
  29. 2026-08-09 21:22 UTCGHSA enrichment
  30. 2026-08-09 17:39 UTCEG score recompute
  31. 2026-08-09 17:39 UTCGHSA enrichment
  32. 2026-08-09 13:46 UTCEPSS rescore
  33. 2026-08-09 13:40 UTCGHSA enrichment
  34. 2026-08-09 08:18 UTCEG score recompute
  35. 2026-08-09 08:18 UTCGHSA enrichment
  36. 2026-08-08 16:37 UTCEPSS rescore
  37. 2026-08-08 11:33 UTCGHSA enrichment
  38. 2026-08-08 07:36 UTCGHSA enrichment
  39. 2026-08-08 03:51 UTCGHSA enrichment
  40. 2026-08-07 23:57 UTCGHSA enrichment
  41. 2026-08-07 20:14 UTCEG score recompute
  42. 2026-08-07 20:14 UTCGHSA enrichment
  43. 2026-08-06 13:46 UTCEPSS rescore
  44. 2026-08-06 06:31 UTCGHSA enrichment
  45. 2026-08-06 02:48 UTCEG score recompute
  46. 2026-08-06 02:48 UTCGHSA enrichment
  47. 2026-08-05 19:17 UTCEPSS rescore
  48. 2026-08-04 15:10 UTCEPSS rescore
  49. 2026-08-04 10:38 UTCEPSS rescore
  50. 2026-08-04 04:33 UTCEG score recompute
  51. 2026-08-04 04:33 UTCGHSA enrichment
  52. 2026-08-03 10:35 UTCEPSS rescore
  53. 2026-08-03 02:34 UTCGHSA enrichment
  54. 2026-08-02 22:51 UTCGHSA enrichment
  55. 2026-08-02 19:08 UTCEG score recompute
  56. 2026-08-02 19:08 UTCGHSA enrichment
  57. 2026-08-02 02:26 UTCEPSS rescore
  58. 2026-08-01 04:15 UTCEPSS rescore
  59. 2026-07-30 01:30 UTCEPSS rescore
  60. 2026-07-27 14:13 UTCEPSS rescore
  61. 2026-07-27 13:55 UTCEG score recompute
  62. 2026-07-27 13:55 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-22891?
CVE-2026-22891 is a critical vulnerability published on March 3, 2026. A heap-based buffer overflow vulnerability exists in the Intan CLP parsing functionality of The Biosig Project libbiosig 3.9.2 and Master Branch (db9a9a63). A specially crafted Intan CLP file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this…
When was CVE-2026-22891 disclosed?
CVE-2026-22891 was first published in the National Vulnerability Database on March 3, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-22891 actively exploited?
CVE-2026-22891 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 53.2% of all scored CVEs.
What is the CVSS score of CVE-2026-22891?
CVE-2026-22891 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-22891?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-22891, 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.

Dependency Blast Radius

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