TI-2026-65181 Aliases CVE-2026-101354 GHSA-ccwh-mr5w-5j9f

FAST FAC1203R MmtAtePrase _tWlanTask stack-based overflow

HIGH 76CWE-119Published 2026-09-29 · Updated 2026-09-29

Key facts

Attack vector: Adjacent 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

A security flaw has been discovered in FAST FAC1203R 20200116_2.0.4. The affected element is the function _tWlanTask of the component MmtAtePrase Parser. Performing a manipulation results in stack-based buffer overflow. The attacker must have access to the local network to execute the attack. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00384 32nd 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: 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

Vendor	Product	Affected versions	Fixed in	Status	Source
FAST	FAC1203R	20200116_2.0.4	—	No fix listed	CNA

FAC1203R VendorFAST Affected 20200116_2.0.4 Fixed in — No fix listed CNA

CPE names CNA · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:fast:fac1203r::::::::	—	—	FAST

cpe:2.3:a:fast:fac1203r:*:*:*:*:*:*:*:* Versions — — ·FAST

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-101354
2026-10-03 Alias added: GHSA-ccwh-mr5w-5j9f

References

Exploit 1

https://github.com/xiaobor123/vuls-find-VxWorks/tree/main/vul-find-FAST_FAC1203R-twlantask-MmtAtePrase-stack-overflow(1)/vul-find-FAST_FAC1203R-twlantask-MmtAtePrase-stack-overflow

TI-2026-65072 FAST FAC1900R devdiscover Service copy_msg_element stack-based overflow CVSS 4.0CRITICAL 10.0
TI-2026-63735 Fast FAC1203R Gigabit Edition Device Discovery Service copy_msg_element stack-based overflow CVSS 4.0CRITICAL 10.0
TI-2026-65071 FAST FAC1200R MmtAtePrase stack-based overflow CVSS 4.0CRITICAL 9.4
TI-2026-65070 FAST FAC1200R devdiscover Service parse_advertisement_frame stack-based overflow CVSS 4.0CRITICAL 9.4
TI-2026-63836 Fast FAC1900R uhttpd get_alias_name stack-based overflow CVSS 4.0MEDIUM 5.3

Sources

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