CVE-2019-16920Unauthenticated remote code execution occurs in D-Link products such as DIR-655C, DIR-866L, DIR-652, and DHP-1565.
Updated under an hour ago ()
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It affects dlink dir-655_firmware and 9 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Mar 25, 2022; federal agencies had to remediate by Apr 15, 2022. Treat that date as your deadline.
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Unauthenticated remote code execution occurs in D-Link products such as DIR-655C, DIR-866L, DIR-652, and DHP-1565. The issue occurs when the attacker sends an arbitrary input to a "PingTest" device common gateway interface that could lead to common injection. An attacker who successfully triggers the command injection could achieve full system compromise. Later, it was independently found that these are also affected: DIR-855L, DAP-1533, DIR-862L, DIR-615, DIR-835, and DIR-825.
- CVSS
- 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-78
- Known exploited
- Added to CISA KEV Mar 25, 2022; federal remediation due Apr 15, 2022The impacted product is end-of-life and should be disconnected if still in use.
- EPSS (exploitation in the next 30 days)
- 100.00% (percentile 100)
- Assigned by
- mitre
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
dlink dir-655_firmware dlink:dir-655_firmware | through 3.02b05 | NVD |
dlink dir-866l_firmware dlink:dir-866l_firmware | through 1.03b04 | NVD |
dlink dir-652_firmware dlink:dir-652_firmware | all versions | NVD |
dlink dhp-1565_firmware dlink:dhp-1565_firmware | through 1.01 | NVD |
dlink dir-855l_firmware dlink:dir-855l_firmware | all versions | NVD |
dlink dap-1533_firmware dlink:dap-1533_firmware | all versions | NVD |
dlink dir-862l_firmware dlink:dir-862l_firmware | all versions | NVD |
dlink dir-615_firmware dlink:dir-615_firmware | all versions | NVD |
dlink dir-835_firmware dlink:dir-835_firmware | all versions | NVD |
dlink dir-825_firmware dlink:dir-825_firmware | all versions | NVD |
References
- https://fortiguard.com/zeroday/FG-VD-19-117x-refsource-misc, broken-link, third-party-advisory
- https://www.seebug.org/vuldb/ssvid-98079x-refsource-misc, exploit, third-party-advisory
- https://medium.com/%4080vul/determine-the-device-model-affected-by-cve-2019-16920-by-zoomeye-bf6fec7f9bb3x-refsource-misc, exploit, third-party-advisory
- https://www.kb.cert.org/vuls/id/766427third-party-advisory, x-refsource-cert-vn, us-government-resource
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-16920us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.