What is CVE-2022-20704?

CVE-2022-20704 is a critical-severity vulnerability in Cisco Small Business Rv Series Router Firmware, classified under Stack-based Buffer Overflow. CVSS score: 10.0/10. Published 2022-02-10.

How severe is CVE-2022-20704?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Is CVE-2022-20704 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Cisco Small Business Rv Series Router Firmware

CVE-2022-20704

Multiple vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code Elevate privileges Execute arbitrary commands Bypass authentication a…

Vulnerability class: Buffer Overflow

EPSS: 0.009 (76.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Cisco Small Business Rv Series Router Firmware — versions n/a

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

Public proof-of-concept exploits

References

20220203 Cisco Small Business RV Series Routers Vulnerabilities (vendor-advisory, x_refsource_CISCO)
www.zerodayinitiative.com/advisories/ZDI-22-413/ (x_refsource_MISC)

Frequently asked questions

What is CVE-2022-20704?: CVE-2022-20704 is a critical-severity vulnerability in Cisco Small Business Rv Series Router Firmware, classified under Stack-based Buffer Overflow. CVSS score: 10.0/10. Published 2022-02-10.
How severe is CVE-2022-20704?: Critical severity. CVSS v3 base score is 10.0 out of 10.
Is CVE-2022-20704 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.