CVE-2022-20912Network attack vector

Root command execution via unchecked HTTP fields

Published Jul 21, 2022 · Updated Nov 1, 2024

Buffer overflow in Cisco Small Business RV110W, RV130, RV130W, and RV215W routers allows remote authenticated users to execute root commands. The web-based management interface copies insufficiently validated user fields from crafted HTTP packets without verifying that the destination buffer is large enough. Valid Administrator credentials are required; exploitation can run arbitrary commands with root privileges or restart the device, while WAN reachability also requires remote management to be enabled.

CVSS severity4.7
Medium
EPSS probability1.05%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Cisco Small Business RV110W, RV130, RV130W, and RV215W routers allows remote authenticated users to execute root commands. The web-based management interface copies insufficiently validated user fields from crafted HTTP packets without verifying that the destination buffer is large enough. Valid Administrator credentials are required; exploitation can run arbitrary commands with root privileges or restart the device, while WAN reachability also requires remote management to be enabled.

The record

CVE
CVE-2022-20912
Published
Jul 21, 2022
Updated
Nov 1, 2024
Vendor
ClamAV
Product
Cisco Small Business RV Series Router Firmware
Classifications
CWE-120, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 21, 2022CVE publishedPublication date reported by the CVE source.
  2. Nov 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

ClamAV · Cisco Small Business RV Series Router Firmwareversion=n/a

Published CVSS scores

4.7Cisco Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:X
7.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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