CVE-2022-20699

Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers: Small Business RV Series Routers Stack-based Buffer Overflow

As of , CVE-2022-20699 in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.

Exploited
Yes: CISA listed it on 3 March 2022
US federal deadline
17 March 202214 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
EPSS score
0.72Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
0.19 on 3 March 2022EPSS on the day CISA listed it.
Public exploit
1 Metasploit module
Fix
No vendor link in CISA's entry

What CISA says to do

Apply updates per vendor instructions.

CISA's required action

What the flaw is

A vulnerability 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 and authorization protections, fetch and run unsigned software, or cause a denial of service (DoS).

CISA's description

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 and authorization protections Fetch and run unsigned software Cause denial of service (DoS) For more information about these vulnerabilities, see the Details section of this advisory.

The CVE record's description, from cisco

CVE published
10 February 2022
Assigned by
cisco
CVSS
10.0 Critical (CVSS 3.1, from the CNA)
CWE-121
Stack-based Buffer Overflow
CWE-785
Use of Path Manipulation Function without Maximum-sized Buffer
CISA SSVC, exploitation
active
CISA SSVC, automatable
yes
CISA SSVC, technical impact
total

Timeline

  1. The CVE record was published.
  2. CISA added it to its list of exploited vulnerabilities.
  3. The US federal deadline to fix it.

Public exploits

Facts from Metasploit's module list and Exploit-DB's index; we never copy exploit code.

  • Metasploit: Cisco RV340 SSL VPN Unauthenticated Remote Code Executionexploit module, rank good

Small Business RV160, RV260, RV340, and RV345 Series Routers: other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2022-20708Small Business RV Series Routers Stack-based Buffer OverflowCisco Small Business RV160, RV260, RV340, and RV345 Series RoutersPatch soon0.15
CVE-2022-20701Small Business RV Series Routers Stack-based Buffer OverflowCisco Small Business RV160, RV260, RV340, and RV345 Series RoutersPatch soon0.10
CVE-2022-20703Small Business RV Series Routers Stack-based Buffer OverflowCisco Small Business RV160, RV260, RV340, and RV345 Series RoutersPatch soon0.09
CVE-2022-20700Small Business RV Series Routers Stack-based Buffer OverflowCisco Small Business RV160, RV260, RV340, and RV345 Series RoutersPatch soon0.06

Read further