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CVE-2022-43972
Null pointer dereference in Linksys WRT54GL
Medium6.5EPSS 1.4%
- Published
- Updated
- Reserved
- Assigned by
- trellix
Description
A null pointer dereference vulnerability exists in Linksys WRT54GL Wireless-G Broadband Router with firmware <= 4.30.18.006. A null pointer dereference in the soap_action function within the upnp binary can be triggered by an unauthenticated attacker via a malicious POST request invoking the AddPortMapping action.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| trellixCNA (assigner) | 3.1 | Medium6.5 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 1.4% · top 28% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Weakness
Affected products
Linksys · WRT54GL Wireless-G Broadband Router
- affected Firmware – ≤ 4.30.18.006
References (3)
- https://youtu.be/73-1lhvJPNg (opens in a new tab)x_transferred
- https://youtu.be/TeWAmZaKQ_w (opens in a new tab)x_transferred
- https://youtu.be/RfWVYCUBNZ0 (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-43972)Record last updated .