This vulnerability allows remote attackers to delete arbitrary files on affected installations of NETGEAR ProSAFE Network Management System…

published 2021-03-29 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-14041

cvss: 7.1; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 73.2%; EPSS 73.2% chance of exploitation in 30 days, percentile 99.4%
public exploits: 0; none known

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.

Exploit prediction

73.25% chance of exploitation in the next 30 days, higher than 99.4% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.0	7.1	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
NVD	3.1	7.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
NVD	2.0	5.5	AV:N/AC:L/Au:S/C:N/I:P/A:P

Affected products

NETGEAR ProSAFE Network Management System

Classification

Weakness

CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

kb.netgear.com /000062722/Security-Advisory-for-Denial-of-Service-on-NMS300-PSV-2020-0500
vendor-advisory
zerodayinitiative.com /advisories/ZDI-21-359/
third-party-advisory, vdb-entry

Sources

CVE List CVE-2021-27276
NVD CVE-2021-27276

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary