VulnerabilityAnalyzed

CVE-2021-34982

NETGEAR Multiple Routers httpd Stack-based Buffer Overflow Remote Code Execution Vulnerability.

HIGH 8.8EPSS 0.58%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.58%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

NETGEAR Multiple Routers httpd Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of multiple NETGEAR routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the httpd service, which listens on TCP port 80 by default. When parsing the strings file, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. . Was ZDI-CAN-13709.

CVSS 3.0: 8.8 HIGHCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.58% probability · 46th percentile
CISA KEV: Not listed
Weakness: CWE-121, CWE-787
Affected: netgear/dc112a firmware · netgear/ex3700 firmware · netgear/ex3800 firmware · netgear/ex6120 firmware · netgear/ex6130 firmware · netgear/ex7000 firmware · netgear/ex7500 firmware · netgear/mr60 firmware · netgear/mr80 firmware · netgear/ms60 firmware · netgear/ms80 firmware · netgear/lax20 firmware · netgear/r6400 firmware · netgear/r6400v2 firmware · netgear/r6700v3 firmware · netgear/r6900p firmware · netgear/r7000 firmware · netgear/r7000p firmware · netgear/r7100lg firmware · netgear/r7850 firmware · +32 more
Source: zdi-disclosures@trendmicro.com

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.