CVE-2021-27251

CWE-319 — Cleartext Transmission3 documents3 sources
Severity
8.8HIGH
EPSS
0.3%
top 47.22%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
44
Netgear Br200 FirmwareNetgear Br500 FirmwareNetgear D7800 Firmware+41 more
Timeline
PublishedApr 14
Latest updateMay 24

Description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR Nighthawk R7800. Authentication is not required to exploit this vulnerability The specific flaw exists within handling of firmware updates. The issue results from a fallback to a insecure protocol to deliver updates. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-12308.

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-2wc2-8hhf-wr42: This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR Nighthawk R7800↗2022-05-24
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CVEList
CVE-2021-27251: This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR Nighthawk R7800↗2021-04-14
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CVE-2021-27251 (HIGH CVSS 8.8) | This vulnerability allows network-a | cvebase.io