CVE-2025-13942: A command injection vulnerability in the UPnP function of the Zyxel EX3510-B0 firmware versions through 5.17(A
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CRITICAL 9.8REMOTEMITIGATEMITIGATEMITIGATE
CVE-2025-13942 is a critical-severity flaw (CVSS 9.8) affecting wx5610-b0 firmware, lte3301-plus firmware, nebula lte3301-plus firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A command injection vulnerability in the UPnP function of the Zyxel EX3510-B0 firmware versions through 5.17(ABUP.15.1)C0 could allow a remote attacker to execute operating system (OS) commands on an affected device by sending specially crafted UPnP SOAP requests.
Why this priority
Critical severity
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 wx5610-b0 firmware MITIGATE
Affected: < 5.18\(acgj.0.5\)c0
Fixed in: 5.18\(acgj.0.5\)c0
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 lte3301-plus firmware MITIGATE
Affected: < 1.00\(abqu.9\)c0
Fixed in: 1.00\(abqu.9\)c0
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 nebula lte3301-plus firmware MITIGATE
Affected: < 1.18\(acca.6\)v0
Fixed in: 1.18\(acca.6\)v0
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 nr7101 firmware MITIGATE
Affected: < 1.00\(abuv.12\)b2
Fixed in: 1.00\(abuv.12\)b2
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 nebula nr7101 firmware MITIGATE
Affected: < 1.16\(accc.1\)v0
Fixed in: 1.16\(accc.1\)v0
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 dx4510-b0 firmware MITIGATE
Affected: < 5.17\(abyl.10.1\)c0
Fixed in: 5.17\(abyl.10.1\)c0
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-2025-13942?
wx5610-b0 firmware: mitigate or apply the listed mitigation; lte3301-plus firmware: mitigate or apply the listed mitigation; nebula lte3301-plus firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2025-13942 being exploited?
CVE-2025-13942 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-2025-13942 affect?
CVE-2025-13942 affects wx5610-b0 firmware, lte3301-plus firmware, nebula lte3301-plus firmware. Severity is critical (CVSS 9.8). A command injection vulnerability in the UPnP function of the Zyxel EX3510-B0 firmware versions through 5.17(ABUP.15.1)C0 could allow a remote attacker to execute operating system (OS) commands on an affected device by sending specially cra
How urgent is CVE-2025-13942?
Priority 56/100. Critical severity; Remotely exploitable, no login, no user action
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