What’s Vulnerable › Vulnerabilities

CVE-2016-6563: D-Link DIR routers contain a stack-based buffer overflow in the HNAP Login action

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 79.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-07-13 · updated 2026-06-17
• Weakness: CWE-121

Description

Processing malformed SOAP messages when performing the HNAP Login action causes a buffer overflow in the stack in some D-Link DIR routers. The vulnerable XML fields within the SOAP body are: Action, Username, LoginPassword, and Captcha. The following products are affected: DIR-823, DIR-822, DIR-818L(W), DIR-895L, DIR-890L, DIR-885L, DIR-880L, DIR-868L, and DIR-850L.

Affected products

• Dlink Dir-818L(W) Firmware: all versions
• D-Link DIR-822: all versions
• Dlink Dir-823 Firmware: all versions
• D-Link DIR-850L and potentially others: all versions
• D-Link DIR-868L: all versions
• D-Link DIR-880L: all versions
• Dlink Dir-885L Firmware: all versions
• D-Link DIR-890L: all versions
• Dlink Dir-895L Firmware: all versions

References

• http://seclists.org/fulldisclosure/2016/Nov/38
• http://www.securityfocus.com/bid/94130
• https://www.exploit-db.com/exploits/40805/
• https://www.kb.cert.org/vuls/id/677427
• http://seclists.org/fulldisclosure/2016/Nov/38
• http://www.securityfocus.com/bid/94130
• https://www.exploit-db.com/exploits/40805/
• https://www.kb.cert.org/vuls/id/677427

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