TI-2025-41217 Aliases CVE-2025-67445 GHSA-v5qr-j3c6-xxx2

TOTOLINK X5000R V9.1.0cu.2415_B20250515 contains a denial-of-service vulnerability in…

LOW 33CWE-400Published 2026-02-24 · Updated 2026-07-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-400.

Summary

TOTOLINK X5000R V9.1.0cu.2415_B20250515 contains a denial-of-service vulnerability in /cgi-bin/cstecgi.cgi. The CGI reads the CONTENT_LENGTH environment variable and allocates memory using malloc (CONTENT_LENGTH + 1) without sufficient bounds checking. When lighttpd s request size limit is not enforced, a crafted large POST request can cause memory exhaustion or a segmentation fault, leading to a crash of the management CGI and loss of availability of the web interface.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00371 31st 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: None
Automatable: No
Technical impact: Partial

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

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 · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:totolink:x5000r_firmware:9.1.0cu.2415_b20250515:::::::*	9.1.0cu.2415_b20250515	Vulnerable	TOTOLINK
cpe:2.3:h:totolink:x5000r:-:::::::*	not specified by NVD	Running on	TOTOLINK

cpe:2.3:o:totolink:x5000r_firmware:9.1.0cu.2415_b20250515:*:*:*:*:*:*:* Versions 9.1.0cu.2415_b20250515 Vulnerable ·TOTOLINK
cpe:2.3:h:totolink:x5000r:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TOTOLINK

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-67445
2026-10-03 Alias added: GHSA-v5qr-j3c6-xxx2

References

Exploit 1

https://github.com/DaRkSpOoOk/CVE-2025-67445

TI-2025-43097 TOTOLINK X5000R v9.1.0cu_2415_B20250515 contains an argument injection vulnerability in… CVSS 3.1CRITICAL 9.8
TI-2025-12054 Incorrect authorization in TOTOLINK X5000R's CVSS 3.1CRITICAL 9.8
TI-2024-28597 In TOTOLINK X5000r v9.1.0cu.2350_b20230313, the file /cgi-bin/cstecgi.cgi contains an OS… CVSS 3.1CRITICAL 9.8
TI-2024-28595 In TOTOLINK X5000r v9.1.0cu.2350_b20230313, the file /cgi-bin/cstecgi.cgi contains an OS… CVSS 3.1CRITICAL 9.8
TI-2024-28587 In TOTOLINK X5000r v9.1.0cu.2350_b20230313, the file /cgi-bin/cstecgi.cgi contains an OS… CVSS 3.1CRITICAL 9.8
TI-2024-21298 TOTOLINK X5000R V9.1.0cu.2350_B20230313 was discovered to contain a command injection… CVSS 3.1CRITICAL 9.8

See all 69 →

Sources

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