CVE-2024-7261: The improper neutralization of special elements in the parameter "host" in the CGI program of Zyxel NWA1123ACv
63
This week
CRITICAL 9.8REMOTEMITIGATEMITIGATEMITIGATE
CVE-2024-7261 is a critical-severity flaw (CVSS 9.8) affecting nwa110ax firmware, nwa1123-ac pro firmware, nwa1123acv3 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The improper neutralization of special elements in the parameter "host" in the CGI program of Zyxel NWA1123ACv3 firmware version 6.70(ABVT.4) and earlier, WAC500 firmware version 6.70(ABVS.4)
and earlier, WAX655E firmware version 7.00(ACDO.1) and earlier, WBE530 firmware version 7.00(ACLE.1)
and earlier, and USG LITE 60AX firmware version V2.00(ACIP.2) could allow an unauthenticated attacker to execute OS commands by sending a crafted cookie
Why this priority
Critical severity
EPSS top 4%: very likely to be exploited
Remotely exploitable, no login, no user action
No fix is published yet: follow the downgrade or mitigation steps.
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
Published CVE record published
Updated Record last modified
zyxel nwa110ax firmware MITIGATE
Affected: < 7.00\(abtg.2\)
Fixed in: 7.00\(abtg.2\)
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.
zyxel nwa1123-ac pro firmware MITIGATE
Affected: < 6.28\(abhd.3\)
Fixed in: 6.28\(abhd.3\)
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.
zyxel nwa1123acv3 firmware MITIGATE
Affected: < 6.70\(abvt.5\)
Fixed in: 6.70\(abvt.5\)
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.
zyxel nwa130be firmware MITIGATE
Affected: < 7.00\(acil.2\)
Fixed in: 7.00\(acil.2\)
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.
zyxel nwa210ax firmware MITIGATE
Affected: < 7.00\(abtd.2\)
Fixed in: 7.00\(abtd.2\)
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.
zyxel nwa220ax-6e firmware MITIGATE
Affected: < 7.00\(acco.2\)
Fixed in: 7.00\(acco.2\)
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.
Verify at the official sourceNVD · 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-2024-7261?
nwa110ax firmware: mitigate or apply the listed mitigation; nwa1123-ac pro firmware: mitigate or apply the listed mitigation; nwa1123acv3 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2024-7261 being exploited?
CVE-2024-7261 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-2024-7261 affect?
CVE-2024-7261 affects nwa110ax firmware, nwa1123-ac pro firmware, nwa1123acv3 firmware. Severity is critical (CVSS 9.8). The improper neutralization of special elements in the parameter "host" in the CGI program of Zyxel NWA1123ACv3 firmware version 6.70(ABVT.4) and earlier, WAC500 firmware version 6.70(ABVS.4)
and earlier, WAX655E firmware version 7.00(ACD
How urgent is CVE-2024-7261?
Priority 63/100. Critical severity; EPSS top 4%: very likely to be exploited; Remotely exploitable, no login, no user action
PatchTheCVE