CVEs / CVE-2022-20703
CVE-2022-20703: Cisco Small Business RV Series Routers Stack-based Buffer Overflow Vulnerability
- Known exploited in the CISA KEV catalog since 3 Mar 2022
- high 8 CVSS 3.1 (NVD)
- EPSS 9.2% chance of exploitation in the next 30 days, higher than 95% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
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).
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Cisco Cisco Small Business RV Series Router Firmware | n/a | — |
Exploitation
| In CISA KEV since | 3 Mar 2022 |
|---|---|
| Due date for US federal agencies | 17 Mar 2022 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 8 highCVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-121, CWE-295 |
References
- CVE-2022-20703 on NVD
- CVE-2022-20703 in the CISA KEV catalog
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smb-mult-vuln-KA9PK6D Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-22-408/ Third Party Advisory, VDB Entry
- https://www.zerodayinitiative.com/advisories/ZDI-22-413/ Third Party Advisory, VDB Entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-20703 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.