Read the docs
TI-2023-15197 Aliases CVE-2023-31742GHSA-x33h-89gf-vgxq

There is a command injection vulnerability in the Linksys WRT54GL router with firmware…

Priority HIGH 67CWE-77Published · Updated

Key facts

Attack vector
Network
Privileges required
High
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 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-77.

Summary

There is a command injection vulnerability in the Linksys WRT54GL router with firmware version 4.30.18.006. If an attacker gains web management privileges, they can inject commands into the post request parameters wl_ant, wl_rate, WL_atten_ctl, ttcp_num, ttcp_size in the httpd s Start_EPI() function, thereby gaining shell privileges.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.09148 95th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:linksys:wrt54gl_firmware:4.30.18.006:*:*:*:*:*:*:*4.30.18.006VulnerableLinksys
cpe:2.3:h:linksys:wrt54gl:-:*:*:*:*:*:*:*not specified by NVDRunning onLinksys
  • cpe:2.3:o:linksys:wrt54gl_firmware:4.30.18.006:*:*:*:*:*:*:* Versions 4.30.18.006 Vulnerable ·Linksys
  • cpe:2.3:h:linksys:wrt54gl:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Linksys

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-31742
  2. 2026-10-03 Alias added: GHSA-x33h-89gf-vgxq

References

Exploit 1

  • TI-2024-01313 Linksys WRT54GL Web Management Interface SysInfo1.htm information disclosure CVSS 3.1MEDIUM 4.3
  • TI-2022-21605 Buffer overflow in Linksys WRT54GL CVSS 3.1HIGH 7.2
  • TI-2022-21608 Arbitrary code execution in Linksys WRT54GL CVSS 3.1HIGH 7.2
  • TI-2022-21607 Null pointer dereference in Linksys WRT54GL CVSS 3.1HIGH 7.5
  • TI-2024-01311 Linksys WRT54GL Web Management Interface SysInfo.htm information disclosure CVSS 3.1HIGH 7.5
  • TI-2024-01312 Linksys WRT54GL Web Management Interface wlaninfo.htm information disclosure CVSS 3.1MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences