CVE-2021-31802
NETGEAR R7000 1.0.11.116 devices have a heap-based Buffer Overflow that is exploitable from the local network without authentication.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 14.2%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.
Description
NETGEAR R7000 1.0.11.116 devices have a heap-based Buffer Overflow that is exploitable from the local network without authentication. The vulnerability exists within the handling of an HTTP request. An attacker can leverage this to execute code as root. The problem is that a user-provided length value is trusted during a backup.cgi file upload. The attacker must add a \n before the Content-Length header.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 14.18% probability · 97th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- netgear/r7000 firmware
- Source
- cve@mitre.org
EPSS 14.2% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://ssd-disclosure.com/ssd-advisory-netgear-nighthawk-r7000-httpd-preauth-rce/Exploit, Third Party Advisory
- https://www.netgear.com/about/security/Vendor Advisory
- https://ssd-disclosure.com/ssd-advisory-netgear-nighthawk-r7000-httpd-preauth-rce/Exploit, Third Party Advisory
- https://www.netgear.com/about/security/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.