Vulnerability Details : CVE-2022-20699

Public exploit exists!
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.
Published 2022-02-10 18:15:09
Updated 2025-03-13 19:56:05
Source Cisco Systems, Inc.
View at NVD,   CVE.org
Vulnerability category: Execute codeDenial of service

Products affected by CVE-2022-20699

CVE-2022-20699 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:
Cisco Small Business RV Series Routers Stack-based Buffer Overflow Vulnerability
CISA required action:
Apply updates per vendor instructions.
CISA description:
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 ca
Notes:
https://nvd.nist.gov/vuln/detail/CVE-2022-20699
Added on 2022-03-03 Action due date 2022-03-17

Exploit prediction scoring system (EPSS) score for CVE-2022-20699

EPSS FAQ
91.05%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 100 %
Percentile, the proportion of vulnerabilities that are scored at or less

Metasploit modules for CVE-2022-20699

  • Cisco RV340 SSL VPN Unauthenticated Remote Code Execution
    Disclosure Date: 2022-02-02
    First seen: 2022-12-23
    exploit/linux/misc/cisco_rv340_sslvpn
    This module exploits a stack buffer overflow in the Cisco RV series routers SSL VPN functionality. The default SSL VPN configuration is exploitable, with no authentication required and works over the Internet! The stack is executable and no ASLR is in place,

CVSS scores for CVE-2022-20699

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
10.0
 HIGH AV:N/AC:L/Au:N/C:C/I:C/A:C
10.0
10.0
 NIST
10.0
 CRITICAL CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
3.9
6.0
 Cisco Systems, Inc.
9.8
 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.9
5.9
 NIST
10.0
 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
3.9
6.0
 Cisco Systems, Inc. 2025-03-13
10.0
 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
3.9
6.0
 Cisco Systems, Inc. 2024-07-24

CWE ids for CVE-2022-20699

  • A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
    Assigned by:
    • psirt@cisco.com (Secondary)
    • ykramarz@cisco.com (Secondary)
  • The product writes data past the end, or before the beginning, of the intended buffer.
    Assigned by: nvd@nist.gov (Primary)
  • The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2022-20699

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