Some filters or firewalls allow fragmented SYN packets with IP reserved bits in violation of their implemented policy.
Priority LOW 35Published · 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
- Partial · Partial · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Some filters or firewalls allow fragmented SYN packets with IP reserved bits in violation of their implemented policy.
Why it matters now
EPSS 0.01297 70th 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-1999-0240
- 2026-10-03 Alias added: GHSA-9w2q-p353-cvp5
References
Sources
- CVE-1999-0240 · CVE Program
- CVE-1999-0240 · NVD
- FIRST EPSS
- GHSA-9w2q-p353-cvp5 · GitHub Advisory Database · CC BY 4.0
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