CVE-2022-20700: Cisco Small Business RV Series Routers Stack-based Buffer Overflow Vulnerability

CVE-2022-20700 · Severity: critical · CVSS 10 · Exploited in the wild · Published 2022-03-03

A stack-based buffer overflow vulnerability in Cisco Small Business RV Series routers allows a remote, unauthenticated attacker to execute arbitrary code, elevate privileges, or cause a denial of service. The flaw stems from insufficient bounds checking when processing network traffic, potentially leading to full system compromise.

Technologies: Cisco RV160, Cisco RV260, Cisco RV340, Cisco RV345 Series Routers, Cisco Small Business Rv160. Vendors: Cisco.

Quick answers

Is CVE-2022-20700 exploited in the wild?
Yes. CVE-2022-20700 is known to be exploited in the wild, first recorded on 3 March 2022. Treat it as urgent.
How severe is CVE-2022-20700?
Critical severity, with a CVSS score of 10, published 3 March 2022.
Which products and versions are affected?
Cisco RV160 Series Routers up to (including) 1.0.01.05; Cisco RV260 Series Routers up to (including) 1.0.01.05; Cisco RV340 Series Routers up to (including) 1.0.03.24; Cisco RV345 Series Routers up to (including) 1.0.03.24.
Is there a fix for CVE-2022-20700?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2022-20700 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2022-20700?
Check whether you run Cisco RV160, Cisco RV260, Cisco RV340 or one of the others listed. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Cisco RV160 Series Routers up to (including) 1.0.01.05
  • Cisco RV260 Series Routers up to (including) 1.0.01.05
  • Cisco RV340 Series Routers up to (including) 1.0.03.24
  • Cisco RV345 Series Routers up to (including) 1.0.03.24

Timeline

  • 2022-02-17: disclosed: Initial analysis by NIST
  • 2022-03-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2022-03-03: exploited: Reported as exploited in the wild

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.