Buffer overflow in Dlink Dir-816
CVE-2025-61577
D-Link DIR-816A2_FWv1.10CNB05 was discovered to contain a stack overflow via the statuscheckpppoeuser parameter in the dir_setWanWifi function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.057 (92.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 92.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.053 · newest: 0.057 · change: +0.004
Affected products
- Dlink Dir-816 — versions a2
- Dlink Dir-816 Firmware — versions 1.10cnb05
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.dlink.com/en/security-bulletin/ (Vendor Advisory)
- github.com/peris-navince/founded-0-days/blob/main/Dlink/816/dir_setWanWifi/1.md (Exploit, Third Party Advisory)
- github.com/Flechao1/iot-vuln/blob/main/dlink-816-b05.md (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-61577?
- CVE-2025-61577 is a high-severity vulnerability in Dlink Dir-816, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2025-10-09.
- How severe is CVE-2025-61577?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2025-61577 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.