Vulnerability-Lookup

GHSA-9WPQ-3W4J-985Q

Vulnerability from github – Published: 2026-02-13 00:32 – Updated: 2026-02-27 21:31

Details

ClamAV ClamBC bytecode interpreter contains a vulnerability in function name processing 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.

Severity ?

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

8.6 (High)


                  
                    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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{
  "affected": [],
  "aliases": [
    "CVE-2020-37167"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-12T23:16:08Z",
    "severity": "HIGH"
  },
  "details": "ClamAV ClamBC bytecode interpreter contains a vulnerability in function name processing 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.",
  "id": "GHSA-9wpq-3w4j-985q",
  "modified": "2026-02-27T21:31:19Z",
  "published": "2026-02-13T00:32:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-37167"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Cisco-Talos/clamav/commit/cd2f2975b93277de7f74464d48adb378375a305f"
    },
    {
      "type": "WEB",
      "url": "https://www.clamav.net"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/47687"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/clamav-clambc-clambc-executable-regular-expression"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/clamav-clambc-clambc-executable-regular-expression-error"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2020-37167 (GCVE-0-2020-37167)

Vulnerability from cvelistv5 – Published: 2026-02-12 22:48 – Updated: 2026-04-07 14:05

Title

ClamAV ClamBC < 0.103.0-rc - 'ClamBC' Executable Regular Expression Error

Summary

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.

Severity ?

8.6 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

8.4 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

Improper Control of Generation of Code ('Code Injection')

Assigner

VulnCheck

References

URL

Tags

	https://www.exploit-db.com/exploits/47687	exploit
	https://github.com/Cisco-Talos/clamav/commit/cd2f…	patch
	https://www.clamav.net/	product
	https://www.vulncheck.com/advisories/clamav-clamb…	third-party-advisory

Impacted products

	Vendor	Product	Version
	ClamAV	ClamBC	Unaffected: 0 , < 0.103.0-rc (semver)

Date Public ?

2019-11-02 00:00

Show details on NVD website

JSON

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      {
        "metrics": [
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            "other": {
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                  },
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-13T17:08:35.606676Z",
                "version": "2.0.3"
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          "name": "ExploitDB-47687",
          "tags": [
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          "url": "https://www.exploit-db.com/exploits/47687"
        },
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      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "ClamAV ClamBC \u003c 0.103.0-rc - \u0027ClamBC\u0027 Executable Regular Expression Error",
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    "datePublished": "2026-02-12T22:48:50.169Z",
    "dateReserved": "2026-02-06T12:30:23.086Z",
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  },
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  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-9WPQ-3W4J-985Q

CVE-2020-37167 (GCVE-0-2020-37167)

Tags

Sightings

Nomenclature