CVE-2021-27257
This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information on affected installations of NETGEAR R7800 firmware version 1.0.2.76.
Does this matter?
Lower severity and a low EPSS score (0.30%). Track it; it rarely justifies an emergency change on its own.
Description
This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information 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 downloading of files via FTP. The issue results from the lack of proper validation of the certificate presented by the server. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-12362.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 0.30% probability · 23th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-295
- Affected
- netgear/br200 firmware · netgear/br500 firmware · netgear/d7800 firmware · netgear/ex6100v2 firmware · netgear/ex6150v2 firmware · netgear/ex6250 firmware · netgear/ex6400 firmware · netgear/ex6400v2 firmware · netgear/ex6410 firmware · netgear/ex6420 firmware · netgear/ex7300 firmware · netgear/ex7300v2 firmware · netgear/ex7320 firmware · netgear/ex7700 firmware · netgear/ex8000 firmware · netgear/lbr20 firmware · netgear/r7800 firmware · netgear/r8900 firmware · netgear/r9000 firmware · netgear/rbk12 firmware · +23 more
- Source
- zdi-disclosures@trendmicro.com
References
- https://kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabilities-on-Some-Routers-Satellites-and-ExtendersPatch, Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-264/Third Party Advisory, VDB Entry
- https://kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabilities-on-Some-Routers-Satellites-and-ExtendersPatch, Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-264/Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.