High severity · published Aug 27, 2025
CVE-2025-9527
A vulnerability was found in Linksys E1700 1.0.0.4.003
8.8
CVSS
1.5%
EPSS
No
On KEV
Description
A vulnerability was found in Linksys E1700 1.0.0.4.003. This affects the function QoSSetup of the file /goform/QoSSetup. Performing manipulation of the argument ack_policy results in stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 75% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EF
E1700 Firmware · Linksys
1.0.0.4.003 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-9527
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-9527
Exploit
https://github.com/wudipjq/my_vuln/blob/main/Linksys2/vuln_60/60.md
Exploit
https://github.com/wudipjq/my_vuln/blob/main/Linksys2/vuln_60/60.md#poc
Permissions Required
https://vuldb.com/?ctiid.321544
Third Party Advisory
https://vuldb.com/?id.321544
Third Party Advisory
https://vuldb.com/?submit.634826
Product
https://www.linksys.com/
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