CVE-2021-27276

moderate-risk
Published 2021-03-29

This vulnerability allows remote attackers to delete arbitrary files on affected installations of NETGEAR ProSAFE Network Management System 1.6.0.26. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the MibController class. When parsing the realName parameter, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-12122.

Do I need to act?

!
10.7% chance of exploitation in next 30 days
EPSS score — higher than 89% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.1/10 High
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Netgear

References (4)

Vendor Advisory https://kb.netgear.com/000062722/Security-Advisory-for-Denial-of-Service-on-NMS3...
Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-21-359/
Vendor Advisory https://kb.netgear.com/000062722/Security-Advisory-for-Denial-of-Service-on-NMS3...
Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-21-359/
41
/ 100
moderate-risk
Severity 25/34 · High
Exploitability 11/34 · Low
Exposure 5/34 · Minimal