CVE-2021-34978
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6260 1.1.0.78_1.0.1 routers.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.52%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6260 1.1.0.78_1.0.1 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the setupwizard.cgi page. A crafted SOAP request can trigger an overflow of a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-13511.
- 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
- 1.52% probability · 73th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-121, CWE-787
- Affected
- netgear/r6260 firmware
- Source
- zdi-disclosures@trendmicro.com
References
- https://kb.netgear.com/000064258/Security-Advisory-for-Vertical-Privilege-Escalation-on-Some-Routers-DSL-Modem-Routers-and-Access-Points-PSV-2021-0151-and-PSV-2021-0170?article=000064258Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-1240/Third Party Advisory, VDB Entry
- https://kb.netgear.com/000064258/Security-Advisory-for-Vertical-Privilege-Escalation-on-Some-Routers-DSL-Modem-Routers-and-Access-Points-PSV-2021-0151-and-PSV-2021-0170?article=000064258Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-1240/Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.