CVE-2019-20500
HighExploitedPublic exploitD-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.
Published Mar 5, 2020 · Updated Nov 7, 2025
Key Facts
Patch immediately- CVE-2019-20500 is a high-severity vulnerability (CVSS 7.8 v3.1) affecting Dwl-2600ap Firmware (Dlink).
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jun 22, 2023. Public exploit code is available.
- EPSS estimates a 97% probability of exploitation in the next 30 days.
- Fixed versions are available, including Dwl-2600ap Firmware <=4.2.0.15, Dwl-2600ap Firmware 4.2.0.15.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
97%
Higher than 99.8% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
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Description
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Jun 29, 2023 | Jul 20, 2023 | Not reported |
| Industry KEV feed | Jun 22, 2023 | Jul 20, 2023 | Not reported |
| CIRCL KEV | Jun 29, 2023 | Jul 20, 2023 | Not reported |
| ENISA EUVD | Jun 29, 2023 | n/a | Not reported |
Required action: Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Dwl-2600ap FirmwareDlink | See advisory | 4.2.0.15 |
Patched Releases
Dwl-2600ap Firmware
<=4.2.0.15
Timeline
Publicly disclosed
Mar 5, 2020
Added to Industry KEV feed
Jun 22, 2023
Added to CISA KEV
Jun 29, 2023
Added to CIRCL KEV
Jun 29, 2023
Added to ENISA EUVD
Jun 29, 2023
Last updated
Nov 7, 2025
Weakness Type
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
References
FAQ
Common Questions.
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.
Affected: Dwl-2600ap Firmware (Dlink). The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jun 22, 2023.
Yes. It was added on Jun 29, 2023 with a federal remediation due date of Jul 20, 2023.
Public exploit code is available.
Fixed versions are available, including Dwl-2600ap Firmware <=4.2.0.15, Dwl-2600ap Firmware 4.2.0.15.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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