D-Link DIR-816A2_FWv1.10CNB05 was discovered to contain a stack overflow via the statuscheckpppoeuser parameter in the dir_setWanWifi funct…

published 2025-10-09 13 mo ago modified 2026-11-05 3 d ago also EUVD-2025-33356

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 5.8%; EPSS 5.8% chance of exploitation in 30 days, percentile 93%
public exploits: 0; none known

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.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 12 mo ago (2025-10-09)

Exploit prediction

5.84% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/peris-navince/founded-0-days/blob/main/Dlink/816/dir_setWanWifi/1.md referenced PoC, tagged "exploit" by a source, unverified
github.com https://github.com/Flechao1/iot-vuln/blob/main/dlink-816-b05.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Classification

Weakness

CWE-121 Stack-based Buffer Overflow

References

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
dlink.com /en/security-bulletin/
vendor-advisory

Sources

CVE List CVE-2025-61577
NVD CVE-2025-61577

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary