Buffer Overflow vulnerability in VirusTotal yara v.4.3.2 allows a remote attacker to…
Priority HIGH 73CWE-787Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
Buffer Overflow vulnerability in VirusTotal yara v.4.3.2 allows a remote attacker to execute arbtirary code via the yr_execute_cod function in the exe.c component.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01062 64th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:virustotal:yara:4.3.2:*:*:*:*:*:*:* | 4.3.2 | Vulnerable | Virustotal |
- cpe:2.3:a:virustotal:yara:4.3.2:*:*:*:*:*:*:* Versions 4.3.2 Vulnerable ·Virustotal
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
Not affected: 2 products
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2023-40857
- 2026-10-03 Alias added: GHSA-wr74-v8h4-7w2f
References
More Virustotal Yara vulnerabilities
- TI-2021-02369 Integer overflow in libyara CVSS 3.1CRITICAL 9.1
- TI-2017-06850 libyara/re.c in the regexp module in YARA 3.5.0 allows remote attackers to cause a denial… CVSS 3.0HIGH 7.5
- TI-2017-05862 libyara/re.c in the regex component in YARA 3.5.0 allows remote attackers to cause a… CVSS 3.0HIGH 7.5
- TI-2016-08286 libyara/lexer.l in YARA 3.5.0 allows remote attackers to cause a denial of service (NULL… CVSS 3.0HIGH 7.5
- TI-2019-14158 In the macho_parse_file functionality in macho/macho.c of YARA 3.11.0, command_size may… CVSS 3.1HIGH 7.8
- TI-2018-08626 In YARA 3.7.1 and prior, parsing a specially crafted compiled rule file can cause an out… CVSS 3.0HIGH 7.8
Sources
- CVE-2023-40857 · CVE Program
- CVE-2023-40857 · NVD
- FIRST EPSS
- GHSA-wr74-v8h4-7w2f · GitHub Advisory Database · CC BY 4.0
- CVE-2023-40857 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences