CVE-2022-20708
HighExploitedPublic exploitMultiple 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…
Published Feb 11, 2022 · Updated Oct 21, 2025
Key Facts
Patch immediately- CVE-2022-20708 is a high-severity vulnerability (CVSS 8.0 v3.1) affecting Rv340 Firmware (Cisco), Rv340w Firmware (Cisco), Rv345 Firmware (Cisco) and 2 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 3, 2022. Public exploit code is available.
- EPSS estimates a 15% probability of exploitation in the next 30 days.
- Fixed versions are available, including Rv340 Firmware <=1.0.03.24, Rv340w Firmware <=1.0.03.24, Rv345 Firmware <=1.0.03.24.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
8.0
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
15%
Higher than 96.6% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2022-20708 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Mar 3, 2022 | Mar 17, 2022 | Not reported |
| Industry KEV feed | Mar 3, 2022 | Mar 17, 2022 | Not reported |
| CIRCL KEV | Mar 3, 2022 | Mar 17, 2022 | Not reported |
| ENISA EUVD | Mar 3, 2022 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
5 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Rv340 FirmwareCisco | See advisory | 1.0.03.24 |
| Rv340w FirmwareCisco | See advisory | 1.0.03.24 |
| Rv345 FirmwareCisco | See advisory | 1.0.03.24 |
| Rv345p FirmwareCisco | See advisory | 1.0.03.24 |
| Cisco Small Business RV Series Router Firmware | >= n/a | n/a |
Patched Releases
Rv340 Firmware
<=1.0.03.24
Rv340w Firmware
<=1.0.03.24
Rv345 Firmware
<=1.0.03.24
Rv345p Firmware
<=1.0.03.24
Timeline
Publicly disclosed
Feb 11, 2022
Added to CISA KEV
Mar 3, 2022
Added to Industry KEV feed
Mar 3, 2022
Added to CIRCL KEV
Mar 3, 2022
Added to ENISA EUVD
Mar 3, 2022
Last updated
Oct 21, 2025
Weakness Type
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
- CWE-121 Stack-based Buffer Overflow
References
- advisoryhttps://cxsecurity.com/issue/WLB-2022020006
- advisoryhttps://github.com/rapid7/metasploit-framework
- advisoryhttps://metasploit.com/download
- advisoryhttps://threatpost.com/critical-cisco-bugs-vpn-routers-cyberattacks/178199/
- advisoryhttps://threatpost.com/infosec-insider-subscription-page/?utm_source=ART&utm_medium=ART&utm_campaign=InfosecInsiders_Newsletter_Promo/
FAQ
Common Questions.
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 ser…
Affected: Rv340 Firmware (Cisco); Rv340w Firmware (Cisco); Rv345 Firmware (Cisco), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 3, 2022.
Yes. It was added on Mar 3, 2022 with a federal remediation due date of Mar 17, 2022.
Public exploit code is available.
Fixed versions are available, including Rv340 Firmware <=1.0.03.24, Rv340w Firmware <=1.0.03.24, Rv345 Firmware <=1.0.03.24.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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