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TI-2023-23113 Aliases CVE-2023-43138GHSA-g567-mjjp-5vw4

TPLINK TL-ER5120G 4.0 2.0.0 Build 210817 Rel.80868n has a command injection…

Priority HIGH 73CWE-77Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
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 · NVD. Fix status from CNA. Impact type from CWE-77.

Summary

TPLINK TL-ER5120G 4.0 2.0.0 Build 210817 Rel.80868n has a command injection vulnerability, when an attacker adds NAPT rules after authentication, and the rule name has an injection point.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.02435 84th 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:tp-link:tl-er5120g_firmware:2.0.0:build_210817:*:*:*:*:*:*2.0.0 build_210817VulnerableTP-Link
cpe:2.3:h:tp-link:tl-er5120g:4.0:*:*:*:*:*:*:*4.0Running onTP-Link
  • cpe:2.3:o:tp-link:tl-er5120g_firmware:2.0.0:build_210817:*:*:*:*:*:* Versions 2.0.0 build_210817 Vulnerable ·TP-Link
  • cpe:2.3:h:tp-link:tl-er5120g:4.0:*:*:*:*:*:*:* Versions 4.0 Running on ·TP-Link

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-43138
  2. 2026-10-03 Alias added: GHSA-g567-mjjp-5vw4

References

Exploit 1

  • TI-2023-23111 There is an unauthorized access vulnerability in TP-LINK ER5120G 4.0 2.0.0 Build 210817… CVSS 3.1CRITICAL 9.8
  • TI-2017-12489 TP-Link TL-WVR, TL-WAR, TL-ER, and TL-R devices allow remote authenticated users to… CVSS 3.0HIGH 8.8
  • TI-2023-23112 TPLINK TL-ER5120G 4.0 2.0.0 Build 210817 Rel.80868n has a command injection… CVSS 3.1HIGH 8.8
  • TI-2017-12492 TP-Link TL-WVR, TL-WAR, TL-ER, and TL-R devices allow remote authenticated users to… CVSS 3.0HIGH 8.8
  • TI-2017-12490 TP-Link TL-WVR, TL-WAR, TL-ER, and TL-R devices allow remote authenticated users to… CVSS 3.0HIGH 8.8
  • TI-2017-12491 The locale feature in cgi-bin/luci on TP-Link TL-WVR, TL-WAR, TL-ER, and TL-R devices… CVSS 3.0MEDIUM 6.5

Sources

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