CVE-2021-27273
HighThis vulnerability allows remote attackers to execute arbitrary code on affected installations of NETGEAR ProSAFE Network Management System 1.6.0.26.
Published Mar 30, 2021 · Updated Aug 3, 2024 · Also known as TR-21-0269
Key Facts
Patch immediately- CVE-2021-27273 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting ProSAFE Network Management System (Netgear).
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 65% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
65%
Higher than 99.2% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
None known
Get the full CVE-2021-27273 brief as a PDF
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Description
This vulnerability allows remote attackers to execute arbitrary code 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 SettingConfigController class. When parsing the fileName parameter, 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 SYSTEM. Was ZDI-CAN-12121.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| ProSAFE Network Management SystemNetgear | 1.6.0.26, >= 1.6.0.26 | n/a |
Timeline
Publicly disclosed
Mar 30, 2021
Last updated
Aug 3, 2024
Weakness Type
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
References
- advisoryhttps://kb.netgear.com/000062686/Security-Advisory-for-Post-Authentication-Command-Injection-on-NMS300-PSV-2020-0559
- advisoryhttps://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-27273
- advisoryhttps://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-27274
- advisoryUSOM advisory
- advisoryhttps://www.zerodayinitiative.com/advisories/ZDI-21-356/
FAQ
Common Questions.
This vulnerability allows remote attackers to execute arbitrary code on affected installations of NETGEAR ProSAFE Network Management System 1.6.0.26.
Affected: ProSAFE Network Management System (Netgear) versions 1.6.0.26, >= 1.6.0.26. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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