CVE-2021-27255

CWE-306 — Missing Authentication3 documents3 sources
Severity
8.8HIGH
EPSS
1.7%
top 17.91%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
44
Netgear Br200 FirmwareNetgear Br500 FirmwareNetgear D7800 Firmware+41 more
Timeline
PublishedMar 5
Latest updateMay 24

Description

This vulnerability allows remote attackers to execute arbitrary code on affected installations of NETGEAR R7800 firmware version 1.0.2.76. Authentication is not required to exploit this vulnerability. The specific flaw exists within the refresh_status.aspx endpoint. The issue results from a lack of authentication required to start a service on the server. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-12360.

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages44 packages

▶NVDnetgear/r7800_firmware< 1.0.2.80
▶NVDnetgear/br200_firmware< 5.10.0.5
▶NVDnetgear/br500_firmware< 5.10.0.5
▶NVDnetgear/d7800_firmware< 1.0.1.60
▶NVDnetgear/lbr20_firmware< 2.6.3.50

Patches

Patch: kb.netgear.com ↗Patch: kb.netgear.com ↗

🔴Vulnerability Details

2
GHSA
GHSA-h584-8p47-255w: This vulnerability allows remote attackers to execute arbitrary code on affected installations of NETGEAR R7800 firmware version 1↗2022-05-24
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CVEList
CVE-2021-27255: This vulnerability allows remote attackers to execute arbitrary code on affected installations of NETGEAR R7800 firmware version 1↗2021-03-05
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CVE-2021-27255 (HIGH CVSS 8.8) | This vulnerability allows remote at | cvebase.io