CVE-2022-24655: A stack overflow vulnerability exists in the upnpd service in Netgear EX6100v1 201.0.2.28, CAX80 2.1.2.6, and

This month

HIGH 7.8MITIGATEMITIGATEMITIGATE

CVE-2022-24655 is a high-severity flaw (CVSS 7.8) affecting ex6100 firmware, ex6200 firmware, cax80 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A stack overflow vulnerability exists in the upnpd service in Netgear EX6100v1 201.0.2.28, CAX80 2.1.2.6, and DC112A 1.0.0.62, which may lead to the execution of arbitrary code without authentication.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-787
Published	2022-03-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: netgear

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-03-18 11:15 UTCPublished CVE record published
2026-06-17 04:32 UTCUpdated Record last modified

netgear ex6100 firmware MITIGATE

Affected: 201.0.2.28

Fixed in: no fixed release known

Safe to downgrade to: a release before 201.0.2.28

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

netgear ex6200 firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

netgear cax80 firmware MITIGATE

Affected: 2.1.2.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.1.2.6

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

netgear dc112a firmware MITIGATE

Affected: 1.0.0.62

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.0.62

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-24655?

ex6100 firmware: mitigate or apply the listed mitigation; ex6200 firmware: mitigate or apply the listed mitigation; cax80 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-24655 being exploited?

CVE-2022-24655 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-24655 affect?

CVE-2022-24655 affects ex6100 firmware, ex6200 firmware, cax80 firmware. Severity is high (CVSS 7.8). A stack overflow vulnerability exists in the upnpd service in Netgear EX6100v1 201.0.2.28, CAX80 2.1.2.6, and DC112A 1.0.0.62, which may lead to the execution of arbitrary code without authentication.

How urgent is CVE-2022-24655?

Priority 49/100. High severity; Public exploit reference

Software pages

Netgear vulnerabilities

Related CVEs

CVE-2025-6510 HIGH 8.8 MITIGATE A vulnerability was found in Netgear EX6100 1.0.2.28_1.1.138
CVE-2024-35519 HIGH 8.4 UPGRADE UPGRADE Netgear EX6120 v1.0.0.68, Netgear EX6100 v1.0.2.28, and Netgear EX3700 v1.0.0.96 are vulnerable to command inj
CVE-2021-38527 HIGH 8.1 UPGRADE UPGRADE Certain NETGEAR devices are affected by command injection by an unauthenticated attacker
CVE-2021-34947 HIGH 8.8 UPGRADE UPGRADE NETGEAR R7800 net-cgi Out-Of-Bounds Write Remote Code Execution Vulnerability
CVE-2018-21228 MEDIUM 6.8 UPGRADE UPGRADE Certain NETGEAR devices are affected by command injection by an authenticated user

References

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