CVE-2022-20705
published 2022-02-10CVE-2022-20705: Multiple vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute…
PriorityP191critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
ITWEXPLOITVulnCheck KEV
Exploited in the wild
EPSS
80.03%
99.6th 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
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cisco | cisco_small_business_rv_series_router_firmware | — | — |
| cisco | rv160_firmware | <= 1.0.01.05 | — |
| cisco | rv160w_firmware | <= 1.0.01.05 | — |
| cisco | rv260_firmware | <= 1.0.01.05 | — |
| cisco | rv260p_firmware | <= 1.0.01.05 | — |
| cisco | rv260w_firmware | <= 1.0.01.05 | — |
| 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
- →CVE-2022-20705 is a session ID directory traversal authentication bypass: nginx checks for the existence of a file at /tmp/websession/token/$cookie_sessionid to grant access to /upload. An attacker can bypass authentication by manipulating the sessionid cookie value to traverse to an existing file path. ↗
- →Monitor for unauthenticated HTTP POST requests to /upload or /form-file-upload on Cisco RV160/RV260/RV340/RV345 routers, especially from WAN interfaces if remote management is enabled. ↗
- →The Metasploit module chains CVE-2022-20705 (auth bypass via session ID directory traversal) with CVE-2022-20707 (command injection) to achieve unauthenticated RCE as www-data on firmware versions 1.0.03.24 and below. ↗
- →Alert on firmware versions RV340/RV345 <= 1.0.03.24 and RV160/RV260 <= 1.0.01.05 as vulnerable; patched versions are RV340/RV345 1.0.03.26 and RV160/RV260 1.0.01.07. ↗
- →Suspicious file writes to /tmp/upload directory on Cisco RV series routers may indicate exploitation of the unauthenticated file upload endpoint. ↗
- ·The /upload endpoint authentication bypass (CVE-2022-20705) is only exploitable from the WAN interface if remote management is explicitly enabled; by default it is only accessible from the LAN interface. ↗
- ·Not all CVEs in the Cisco advisory (cisco-sa-smb-mult-vuln-KA9PK6D) apply to all affected product models; check the vendor advisory for per-product applicability. ↗
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
vulncheck10.0CRITICAL
vendor_cisco10.0CRITICAL
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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-2022-20705 Cisco Small Business RV Series Routers Vulnerabilities
CVE-2022-20705: 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-fc53-xp9c-pw84: 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-2022-20705 [CRITICAL] CWE-787 GHSA-fc53-xp9c-pw84: 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 RV Series Routers Stack-based Buffer Overflow
vulncheck·2022·CVSS 10.0
CVE-2022-20705 [CRITICAL] Cisco RV Series Routers Stack-based Buffer Overflow
Cisco RV Series Routers Stack-based Buffer Overflow
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: Cisco RV Series Routers
Required Action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Exploitation References: https://hs-8813571.f.hubspotemail.net/hubfs/8813571/PERISCOPE_VULNINTEL_20250903.pdf
No detection rules found.
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
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Crowdstrike
How To Pwn2Own The Cisco RV340 Router
blogs_crowdstrike·CVSS 7.5
CVE-2026-20929 [HIGH] How To Pwn2Own The Cisco RV340 Router
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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
http://packetstormsecurity.com/files/170988/Cisco-RV-Series-Authentication-Bypass-Command-Injection.htmlhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smb-mult-vuln-KA9PK6Dhttps://www.zerodayinitiative.com/advisories/ZDI-22-409/https://www.zerodayinitiative.com/advisories/ZDI-22-410/https://www.zerodayinitiative.com/advisories/ZDI-22-415/http://packetstormsecurity.com/files/170988/Cisco-RV-Series-Authentication-Bypass-Command-Injection.htmlhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smb-mult-vuln-KA9PK6Dhttps://www.zerodayinitiative.com/advisories/ZDI-22-409/https://www.zerodayinitiative.com/advisories/ZDI-22-410/https://www.zerodayinitiative.com/advisories/ZDI-22-415/
2022-02-10
Published
Exploited in the wild