FastCGI (aka fcgi and libfcgi) 2.4.0 allows remote attackers to cause a denial of service…
Priority LOW 32CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
FastCGI (aka fcgi and libfcgi) 2.4.0 allows remote attackers to cause a denial of service (segmentation fault and crash) via a large number of connections.
Why it matters now
EPSS 0.06086 93rd 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.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 2 products
- Red Hat Ceph Storage 1.2
- Red Hat Ceph Storage 1.3
Timeline
- 2026-10-02 Threatist record created from CVE-2012-6687
- 2026-10-03 Alias added: GHSA-v5rv-9c87-6gww
References
Other 6
- https://bugzilla.redhat.com/show_bug.cgi?id=1189958
- https://bugs.launchpad.net/ubuntu/+source/libfcgi/+bug/933417
- http://advisories.mageia.org/MGASA-2015-0184.html
- [oss-security] 20150207 Re: CVE request for denial-of-service vulnerability in fcgi
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=681591
- [oss-security] 20150206 CVE request for denial-of-service vulnerability in fcgi
More FastCGI Fcgi vulnerabilities
- TI-2025-27301 Heap-based buffer overflow in ether FCGI CVSS 3.1MEDIUM 5.3
Sources
- CVE-2012-6687 · CVE Program
- CVE-2012-6687 · NVD
- FIRST EPSS
- GHSA-v5rv-9c87-6gww · GitHub Advisory Database · CC BY 4.0
- CVE-2012-6687 · Red Hat security data · CC BY 4.0
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