CVE-2020-27864 in the critical feed json
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-1860 firmware versio…
published 2021-02-11 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-20357
- cvss
- 8.8
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 10.1%
- EPSS 10.1% chance of exploitation in 30 days, percentile 95%
- public exploits
- 0
- none known
Summary
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-1860 firmware version 1.04B03 WiFi extenders. Authentication is not required to exploit this vulnerability. The specific flaw exists within the HNAP service, which listens on TCP port 80 by default. When parsing the Authorization request header, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-10880.
Exploit prediction
10.10% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 8.8 | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 8.3 | AV:A/AC:L/Au:N/C:C/I:C/A:C |
Affected products
- D-Link DAP-1860
Classification
- Weakness
-
- CWE-77 Improper Neutralization of Special Elements used in a Command
References
-
supportannouncement.us.dlink.com
/announcement/publication.aspx?name=SAP10197
vendor-advisory
-
zerodayinitiative.com
/advisories/ZDI-20-1428/
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2020-27864
- NVD CVE-2020-27864
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