CVE-2022-20701
published 2022-02-10CVE-2022-20701: Multiple vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute…
PriorityP181high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
KEVITW
CISA Known Exploited Vulnerabilitydue 2022-03-17
Exploited in the wild
EPSS
9.75%
95.0th percentile
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.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cisco | cisco_small_business_rv_series_router_firmware | — | — |
| cisco | rv340_firmware | <= 1.0.03.24 | — |
| cisco | rv340w_firmware | <= 1.0.03.24 | — |
| cisco | rv345_firmware | <= 1.0.03.24 | — |
| cisco | rv345p_firmware | <= 1.0.03.24 | — |
| cisco | small_business_rv_series_routers | — | — |
Detection & IOCsextracted from sources · hover to see the quote
- →The /upload endpoint on Cisco RV340 series routers only checks for the existence of a session token file at /tmp/websession/token/$cookie_sessionid via nginx config — an attacker bypassing this check (CVE-2022-20705) can reach the unauthenticated file upload handler at /form-file-upload, enabling unauthenticated file upload leading to RCE as root. ↗
- →Monitor for unexpected POST requests to /form-file-upload and /upload on Cisco RV series routers, especially from WAN interfaces if remote management is enabled, as these endpoints are the attack surface for CVE-2022-20701/20705/20707. ↗
- →Files uploaded via the /upload endpoint are stored in /tmp/upload; monitor for unexpected files appearing in this directory on affected Cisco RV series routers as an indicator of exploitation. ↗
- →CVE-2022-20701 is a local privilege escalation (LPE) chained with CVE-2022-20705 (Authentication Bypass) and CVE-2022-20707 (Command Injection) to achieve unauthenticated RCE as root; detections should consider the full chain, not just individual CVEs. ↗
- →Affected firmware versions for RV340/RV345: 1.0.03.24 and earlier. Affected firmware for RV160/RV260: 1.0.01.05 and earlier. Use these version strings to identify unpatched devices in asset inventory or network scanning. ↗
- ·The nginx upload authentication check relies solely on the existence of a file at /tmp/websession/token/$cookie_sessionid — this is a weak file-existence check, not a cryptographic validation, making it bypassable (CVE-2022-20705). ↗
- ·The web UI (and thus the vulnerable /upload and /form-file-upload endpoints) is exposed on the WAN interface if remote management is enabled — organizations should verify remote management is disabled to reduce attack surface. ↗
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.2HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C
vulncheck10.0CRITICAL
cisa7.8HIGH
vendor_cisco10.0CRITICAL
CVEs like this are exactly what “Exploited This Week” covers.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
CISA
Cisco Small Business RV Series Routers Stack-based Buffer Overflow Vulnerability
cisa·2022-03-03·CVSS 7.8
CVE-2022-20701 [HIGH] CWE-121 Cisco Small Business RV Series Routers Stack-based Buffer Overflow Vulnerability
Vulnerability: Cisco Small Business RV Series Routers Stack-based Buffer Overflow Vulnerability
Affected: Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers
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).
Required Action: Apply updates per vendor instructions.
Notes: https://nvd.nist.gov/vuln/detail/CVE-2022-20701
Remediation Due Date: 2022-03-17
Cisco
Cisco Small Business RV Series Routers Vulnerabilities
vendor_cisco·2022-02-02·CVSS 10.0
CVE-2022-20699 [CRITICAL] CWE-121 Cisco Small Business RV Series Routers Vulnerabilities
Cisco Small Business RV Series Routers Vulnerabilities
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.
Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.
This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smb-mult-vuln-KA9PK6D
Cisco
Cisco Small Business RV Series Routers Vulnerabilities
vendor_cisco·CVSS 3.1
CVE-2022-20701 Cisco Small Business RV Series Routers Vulnerabilities
CVE-2022-20701: Cisco Small Business RV Series Routers Vulnerabilities
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
CVSS: 3.1
CWE: CWE-121, CWE-269, CWE-285, CWE-121, CWE-269, CWE-285, CWE-295, CWE-347, CWE-362, CWE-434, CWE-552, CWE-754, CWE-77, CWE-785, CWE-121, CWE-269, CWE-285, CWE-121, CWE-269, CWE-285, CWE-295, CWE-347, CWE-362, CWE-434, CWE-552, CWE-754, CWE-77, CWE-785
Bug IDs: CSCvz88279, CSCvz94704, CSCwa12732, CSCvz88279, CSCvz94704
GHSA
GHSA-9358-2j57-j7hg: Multiple vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Exe
ghsa_unreviewed·2022-02-11
CVE-2022-20701 [CRITICAL] CWE-121 GHSA-9358-2j57-j7hg: Multiple vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Exe
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.
VulnCheck
Cisco Small Business RV Series Routers Stack-based Buffer Overflow Vulnerability
vulncheck·2022·CVSS 10.0
CVE-2022-20701 [CRITICAL] CWE-121 Cisco Small Business RV Series Routers Stack-based Buffer Overflow Vulnerability
Cisco Small Business RV Series Routers Stack-based Buffer Overflow Vulnerability
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).
Affected: Cisco RV Series Routers
Required Action: Apply updates per vendor instructions.
Exploitation References: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json
Remediation Due: 2022-03-17
No detection rules found.
No public exploits indexed.
Tenable
CVE-2022-20699, CVE-2022-20700, CVE-2022-20708: Critical Flaws in Cisco Small Business RV Series Routers
blogs_tenable·2022-02-03·CVSS 10.0
[CRITICAL] CVE-2022-20699, CVE-2022-20700, CVE-2022-20708: Critical Flaws in Cisco Small Business RV Series Routers
## Cloud Exposure
Tenable Cloud Security (CNAPP) Request a demo
Tenable Cloud Vulnerability Management Request a demo
Tenable CIEM Request a demo
Secure your cloud
## Vulnerability Exposure
Tenable Vulnerability Management Try for free
Tenable Security Center Request a demo
Tenable Web App Scanning Try for free
Tenable Patch Management Request a demo
Tenable Enclave Security Request a demo
Tenable Attack Surface Management Request a demo
Tenable Nessus Try for free
## AI Exposure
Tenable AI Exposure Request a demo
## OT/IoT Exposure
Tenable OT Security Request a demo
## Identity Exposure
Tenable Identity Exposure Request a demo
## Business needs
Active Directory
AI Security Posture Management (AI-SPM)
AWS security
Azure security
Cloud Security Posture Man
Crowdstrike
How To Pwn2Own The Cisco RV340 Router
blogs_crowdstrike·CVSS 7.5
CVE-2026-20929 [HIGH] How To Pwn2Own The Cisco RV340 Router
STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
How Charlotte AI AgentWorks Fuels Security's Agentic Ecosystem Mar 25, 2026
STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
How Charlotte AI AgentWorks Fuels Security's Agentic Ecosystem Mar 25, 2026
Video Highlights the 4 Key Steps to Successful Incident Response Dec 02, 2019
Helping Non-Security Stakeholders Understand ATT&CK in 10 Minutes or Less [VI
Crowdstrike
How To Pwn2Own The Cisco RV340 Router
blogs_crowdstrike·CVSS 7.5
CVE-2026-20929 [HIGH] How To Pwn2Own The Cisco RV340 Router
STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
How Charlotte AI AgentWorks Fuels Security's Agentic Ecosystem Mar 25, 2026
STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
How Charlotte AI AgentWorks Fuels Security's Agentic Ecosystem Mar 25, 2026
Video Highlights the 4 Key Steps to Successful Incident Response Dec 02, 2019
Helping Non-Security Stakeholders Understand ATT&CK in 10 Minutes or Less [VI
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smb-mult-vuln-KA9PK6Dhttps://www.zerodayinitiative.com/advisories/ZDI-22-412/https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smb-mult-vuln-KA9PK6Dhttps://www.zerodayinitiative.com/advisories/ZDI-22-412/https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-20701
2022-02-10
Published
2022-03-03
Added to CISA KEV
Exploited in the wild