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TI-2026-80926 Aliases CVE-2026-116508GHSA-5vj6-9qxv-4h93

TOTOLINK A950RG stack-based overflow in infostat.cgi via CONTENT_LENGTH

Priority HIGH 82CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

CVE-2026-116508 (GHSA-5vj6-9qxv-4h93) is a stack-based buffer overflow in function sub_402340 of infostat.cgi, the Device-Information CGI of TOTOLINK A950RG 4.1.2cu.5268_B20221104. Manipulating the CONTENT_LENGTH argument triggers the overflow remotely, and a public exploit exists. The CVSS 4.0 base score is 10.0 (CRITICAL), with weaknesses CWE-119 and CWE-121. CISA's SSVC rates exploitation as poc, automatable as yes and technical impact as total, and the CVE is not listed in CISA KEV.

Written with Claude Haiku 5.5 from the sources below · 2026-10-31

Description from the CNA

A security flaw has been discovered in TOTOLINK A950RG 4.1.2cu.5268_B20221104. Affected by this issue is the function sub_402340 of the file infostat.cgi of the component Device-Information CGI. Performing a manipulation of the argument CONTENT_LENGTH results in stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00609 49th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
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
TOTOLINKA950RG4.1.2cu.5268_B20221104—No fix listedCNA
  • A950RG VendorTOTOLINK Affected 4.1.2cu.5268_B20221104 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:o:totolink:a950rg_firmware:*:*:*:*:*:*:*:*——TOTOLINK
  • cpe:2.3:o:totolink:a950rg_firmware:*:*:*:*:*:*:*:* Versions — — ·TOTOLINK

Remediation

The sources list no fixed version. Restrict access to the device's web management interface or replace the device.

Written with Claude Haiku 5.5 from the sources below · 2026-10-31

Timeline

  1. 2026-10-26 Threatist record created from CVE-2026-116508
  2. 2026-10-27 Alias added: GHSA-5vj6-9qxv-4h93
  3. 2026-10-31 CISA SSVC decision points changed
  4. 2026-10-31 Priority changed: MEDIUM → HIGH

References

Exploit 1

Other 1

  • TI-2023-25090 An issue in TOTOLINK A3700R v.9.1.2u.6165_20211012 allows a remote attacker to execute… CVSS 3.1CRITICAL 9.8
  • TI-2026-79142 Command injection in TOTOLINK A950RG UploadCustomModule function CVSS 4.0CRITICAL 10.0
  • TI-2026-79031 TOTOLINK EX200 setWiFiAclAddConfig stack-based buffer overflow CVSS 4.0CRITICAL 10.0
  • TI-2026-79012 Stack-based buffer overflow in TOTOLINK EX200 setStaticDhcpConfig CVSS 4.0CRITICAL 10.0
  • TI-2026-67719 Stack-based overflow in Totolink A3002MU QoS rule handler CVSS 4.0CRITICAL 10.0
  • TI-2026-67718 Improper authorization in Totolink A3002MU authentication check CVSS 4.0CRITICAL 10.0
See all 1321 →

Sources

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