CVE-2016-6563

9.8 CRITICAL 80% exploit odds Drop everything No fix listed Memory safety Network gear

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
Exploit odds: 79.7% chance of exploitation in the next 30 days (EPSS). Higher than most.
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2016-08-03 00:00 UTC ReservedThe CVE id was reserved by its CNA
2018-07-13 20:29 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 00:51 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 79.7% in the next 30 days (EPSS).
Severity: 9.8 CRITICAL (CVSS).
Fix: none linked yet, which raises it.
It meets the bar for Drop everything: critical, and exploited or very likely to be.

Details

Published: 2018-07-13 20:29 UTC
Last modified: 2026-06-17 00:51 UTC
Exploit probability: 79.7% · EPSS, next 30 days
Weakness: CWE-121
Record status: Modified

Affected

Dlink dir-823 Firmware
Dlink dir-822 Firmware
Dlink dir-818l\(w\) Firmware
Dlink dir-895l Firmware
Dlink dir-890l Firmware
Dlink dir-885l Firmware
Dlink dir-880l Firmware
Dlink dir-868l Firmware

Attack profile CVSS 3.0 · 9.8

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Raw vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2016-6563.md and follow it. Check whether this project is affected by CVE-2016-6563. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

· More options · Status badge

Download Square Reddit

References

NVD record · CVE.org record