CVE-2019-20500 D-Link DWL-2600AP Access Point Command Injection Vulnerability
D-Link DWL-2600AP access point contains an authenticated command injection vulnerability via the Save Configuration functionality in the Web interface, using shell metacharacters in the admin.cgi?action=config_save configBackup or downloadServerip parameter.
From the CISA KEV catalogue version 2026.11.06, with Cybergen analysis. Updated 6 Nov 2026.
Should You Worry?
- CISA confirmed exploitation in the wild and added it to the Known Exploited Vulnerabilities catalogue on 29 Jun 2023.
- Rated High severity (CVSS 7.8, scored by CISA).
- It has been in the catalogue for 1,226 days. Systems still unpatched now have almost certainly been scanned for it.
What It Is
D-Link DWL-2600AP 4.2.0.15 Rev A devices have an authenticated OS command injection vulnerability via the Save Configuration functionality in the Web interface, using shell metacharacters in the admin.cgi?action=config_save configBackup or downloadServerip parameter.
What To Do Now
- 1
Find it
Search your asset inventory and external attack surface for D-Link DWL-2600AP Access Point. Include cloud images, appliances and anything a supplier runs for you.
Attack Surface Management - 2
Fix it
Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.
Vulnerability Management - 3
Hunt for compromise
If an affected system was reachable before you patched, assume it may have been hit. Check logs, new accounts, web shells and outbound connections from the date of exposure.
Incident Response - 4
Prove it is fixed
Rescan or test the system after patching. Upgrades that fail silently and forgotten secondary instances are common.
Penetration Testing
The Compliance Clock
General guidance, not legal advice. Your obligations depend on your sector, scope and jurisdiction.
Not Sure If You Are Exposed?
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