Integer overflow in bcmath in Facebook HHVM before 3.15.0 allows attackers to have…
Priority MEDIUM 47CWE-190Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-190 and the CVSS impact.
Summary
Integer overflow in bcmath in Facebook HHVM before 3.15.0 allows attackers to have unspecified impact via unknown vectors, which triggers a buffer overflow.
Why it matters now
EPSS 0.02329 83rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
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
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2016-6871
- 2026-10-03 Alias added: GHSA-69p6-g3px-hvhw
References
More Meta Hhvm vulnerabilities
- TI-2018-04659 Improper input validation in Meta HHVM CVSS 3.1CRITICAL 9.8
- TI-2022-17147 Broken or risky cryptographic algorithm in Meta HHVM CVSS 3.1CRITICAL 9.8
- TI-2019-08934 Memory corruption in Meta HHVM CVSS 3.1CRITICAL 9.8
- TI-2021-06352 Heap-based buffer overflow in Meta folly CVSS 3.1CRITICAL 9.8
- TI-2019-08935 An invalid free in mb_detect_order can cause the application to crash or potentially… CVSS 3.1CRITICAL 9.8
- TI-2019-08931 Memory corruption in Meta HHVM CVSS 3.0CRITICAL 9.8
Sources
- CVE-2016-6871 · CVE Program
- CVE-2016-6871 · NVD
- FIRST EPSS
- GHSA-69p6-g3px-hvhw · GitHub Advisory Database · CC BY 4.0
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