D-Link Routers Buffer Overflow Vulnerability
D-Link Go-RT-AC750 GORTAC750_revA_v101b03 and GO-RT-AC750_revB_FWv200b02 are vulnerable to Buffer Overflow via cgibin, hnap_main,
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 4 / 5
- KEV catalog (CISA)08 Dec 2025
- Exploited in EUVD (ENISA)08 Dec 2025
- Used by ransomwareno
- EPSS above 10 %55.5%
- No account, over the networkyes
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Affected products
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
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Published
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Exploitation reported (ENISA)
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Added to the KEV catalog
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CISA remediation due date
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EPSS peak: 55.5%
References
Other exploited vulnerabilities from the same vendor
- CVE-2025-29635D-Link DIR-823X Command Injection Vulnerability7.3 · Background exploitation
- CVE-2022-40799D-Link DNR-322L Download of Code Without Integrity Check Vulnerability6.3 · Background exploitation
- CVE-2020-25079D-Link DCS-2530L and DCS-2670L Command Injection Vulnerability6.9 · Background exploitation
- CVE-2020-25078D-Link DCS-2530L and DCS-2670L Devices Unspecified Vulnerability8.3 · Background exploitation
- CVE-2024-0769D-Link DIR-859 Router Path Traversal Vulnerability7.0 · Background exploitation
- CVE-2023-25280D-Link DIR-820 Router OS Command Injection Vulnerability9.3 · Background exploitation