CVE-2025-9481: Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 setIpv6 stack-based overflow

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-08-26 · updated 2026-06-17
Weakness: CWE-119

Description

A security vulnerability has been detected in Linksys RE6250, RE6300, RE6350, RE6500, RE7000 and RE9000 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001. This affects the function setIpv6 of the file /goform/setIpv6. The manipulation of the argument tunrd_Prefix leads to stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

Linksys Re6250 Firmware: 1.0.04.001
Linksys Re6300 Firmware: 1.2.07.001
Linksys Re6350 Firmware: 1.0.04.001
Linksys Re6500 Firmware: 1.0.013.001
Linksys Re7000 Firmware: 1.1.05.003
Linksys Re9000 Firmware: 1.0.04.002

References

https://github.com/wudipjq/my_vuln/blob/main/Linksys/vuln_35/35.md
https://github.com/wudipjq/my_vuln/blob/main/Linksys/vuln_35/35.md#poc
https://vuldb.com/?ctiid.321396
https://vuldb.com/?id.321396
https://vuldb.com/?submit.634819
https://www.linksys.com/
https://github.com/wudipjq/my_vuln/blob/main/Linksys/vuln_35/35.md
https://github.com/wudipjq/my_vuln/blob/main/Linksys/vuln_35/35.md#poc

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