CVE-2020-37167

CRITICALNVD 8.49.8▲
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: HIGH) published 2026-02-13. NVD baseline CVSS 8.4; sources differ by 1.4.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.4Exploit: Elevated riskExposed: 0

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

ClamAV versions prior to 0.103.0-rc contain a vulnerability in function name processing through the ClamBC bytecode interpreter that allows attackers to manipulate bytecode function names. Attackers can exploit the weak input validation in function name encoding to potentially execute malicious bytecode or cause unexpected behavior in the ClamAV engine.

CVSS v3
8.4
EG Score
9.8(medium)
EG Risk
75(Attend)
EG Risk 75/100SSVC: Attend

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%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
8%
KEV
Not listed

Published

February 12, 2026

Last Modified

June 17, 2026

Advisory Details (4)

Auto-updated Jun 8, 2026
🔬 Proof of concept available. Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

ClamAV ClamBC <= 0.102.0 - 'ClamBC' Executable Regular Expression Error | Advisories | VulnCheck

https://www.vulncheck.com/advisories/clamav-clambc-clambc-executable-regular-expression-error
generic🟡 PoC Available

ClamAV < 0.102.0 - 'bytecode_vm' Code Execution - Linux local Exploit

https://www.exploit-db.com/exploits/47687
generic

ClamAVNet

https://www.clamav.net/
github_commit

commit cd2f2975b932 (Cisco-Talos/clamav)

Fix landed in Cisco-Talos/clamav commit cd2f2975b932 — awaiting tagged release

https://github.com/Cisco-Talos/clamav/commit/cd2f2975b93277de7f74464d48adb378375a305f

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
clamav—0.103.0+dfsg-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
clamav—0.103.0+dfsg-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
clamav—0.103.0+dfsg-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
clamav—0.103.0+dfsg-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 24× 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 215 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2020-37167?
CVE-2020-37167 is a critical vulnerability published on February 12, 2026. ClamAV versions prior to 0.103.0-rc contain a vulnerability in function name processing through the ClamBC bytecode interpreter that allows attackers to manipulate bytecode function names. Attackers can exploit the weak input validation in function name encoding to potentially execute malicious…
When was CVE-2020-37167 disclosed?
CVE-2020-37167 was first published in the National Vulnerability Database on February 12, 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-2020-37167 actively exploited?
CVE-2020-37167 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 92.3% of all scored CVEs.
What is the CVSS score of CVE-2020-37167?
CVE-2020-37167 has a CVSS v3 base score of 8.4 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.8.
How do I remediate CVE-2020-37167?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-37167, 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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