Vulnerability · Published Aug 11, 2025 · Assigned by VulDB

CVE-2025-8833Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 langSwitchBack stack-based overflow

High 8.8

In plain English

A high-severity stack buffer overflow in RE6250 from Linksys. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 67% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)1.2%top 32.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was identified in Linksys RE6250, RE6300, RE6350, RE6500, RE7000 and RE9000 up to 20250801. This issue affects the function langSwitchBack of the file /goform/langSwitchBack. The manipulation of the argument langSelectionOnly leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
Linksys	RE6250	20250801
Linksys	RE6300	20250801
Linksys	RE6350	20250801
Linksys	RE6500	20250801
Linksys	RE7000	20250801
Linksys	RE9000	20250801

Weakness: CWE-121, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-319367 | Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 langSwitchBack stack-based overflow vdb-entry, technical-description
VDB-319367 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #626698 | Linksys RE6500、RE6250、RE6300、RE6350、RE7000、RE9000 RE6500(1.0.013.001) RE6250(1.0.04.001) RE6300(1.2.07.001) RE6350(1.0.04.001) RE7000(1.1.05.003) RE9000(1.0.04.002) Stack-based Buffer Overflow third-party-advisory
https://github.com/wudipjq/my_vuln/blob/main/Linksys/vuln_38/38.md related
https://github.com/wudipjq/my_vuln/blob/main/Linksys/vuln_38/38.md#poc exploit
https://www.linksys.com/ product