The PVLAN protocol allows remote attackers to bypass network segmentation and spoof PVLAN…
Priority LOW 26Published · 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 · Partial · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
The PVLAN protocol allows remote attackers to bypass network segmentation and spoof PVLAN traffic via a PVLAN message with a target MAC address that is set to a gateway router, which causes the packet to be sent to the router, where the source MAC is modified, aka "Modification of the MAC spoofing PVLAN jumping attack," as demonstrated by pvlan.c.
Why it matters now
EPSS 0.01611 76th 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
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:pvlan_protocol:pvlan_protocol:*:*:*:*:*:*:*:* | all versions | Vulnerable | Pvlan Protocol |
- cpe:2.3:a:pvlan_protocol:pvlan_protocol:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Pvlan Protocol
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2005-4441
- 2026-10-03 Alias added: GHSA-9g3f-pc53-92m7
References
Sources
- CVE-2005-4441 · CVE Program
- CVE-2005-4441 · NVD
- FIRST EPSS
- GHSA-9g3f-pc53-92m7 · GitHub Advisory Database · CC BY 4.0
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