Buffer overflow in Linksys Re6250
CVE-2025-8833
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.
Vulnerability class: Buffer Overflow
EPSS: 0.010 (58.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linksys Re6250 — versions 20250801
- Linksys Re6250_firmware — versions 1.0.04.001
- Linksys Re6300 — versions 20250801
- Linksys Re6300_firmware — versions 1.2.07.001
- Linksys Re6350 — versions 20250801
- Linksys Re6350_firmware — versions 1.0.04.001
- Linksys Re6500 — versions 20250801
- Linksys Re6500_firmware — versions 1.0.013.001
- Linksys Re7000 — versions 20250801
- Linksys Re7000_firmware — versions 1.1.05.003
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cna@vuldb.com (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- cna@vuldb.com (signature, Permissions Required, permissions-required, VDB Entry)
- cna@vuldb.com (VDB Entry, Third Party Advisory, third-party-advisory)
- cna@vuldb.com (related, Exploit, Third Party Advisory)
- cna@vuldb.com (Exploit, Third Party Advisory, exploit)
- cna@vuldb.com (Product, product)
Frequently asked questions
- What is CVE-2025-8833?
- CVE-2025-8833 is a high-severity vulnerability in Linksys Re6250, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2025-08-11.
- How severe is CVE-2025-8833?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2025-8833 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.