Buffer overflow in Linksys E1700
CVE-2025-9527
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…
Vulnerability class: Buffer Overflow
EPSS: 0.013 (67.1th 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/E:P/RL:X/RC:R.
Affected products
- Linksys E1700 — versions 1.0.0.4.003
Weakness classification (CWE)
Public proof-of-concept exploits
References
- VDB-321544 | Linksys E1700 QoSSetup stack-based overflow (vdb-entry, technical-description)
- VDB-321544 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
- Submit #634826 | Linksys E1700 E1700(1.0.0.4.003) Stack-based Buffer Overflow (third-party-advisory)
- github.com/wudipjq/my_vuln/blob/main/Linksys2/vuln_60/60.md (related)
- github.com/wudipjq/my_vuln/blob/main/Linksys2/vuln_60/60.md (exploit)
- www.linksys.com/ (product)
Frequently asked questions
- What is CVE-2025-9527?
- CVE-2025-9527 is a high-severity vulnerability in Linksys E1700, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2025-08-27.
- How severe is CVE-2025-9527?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2025-9527 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.