Unauthenticated Command Injection in Zyxel EX3510-B0 UPnP
CVE-2025-13942 is a command injection vulnerability in the UPnP function of Zyxel EX3510-B0 firmware. Firmware versions through 5.17(ABUP.15.1)C0 are affected. A remote attacker can send specially crafted UPnP SOAP requests to the vulnerable UPnP component and trigger execution of operating system commands on the device. The provided context also characterizes this as an unauthenticated flaw with network-reachable exploitation and high impact across confidentiality, integrity, and availability.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
30 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An unauthenticated command injection vulnerability in a Zyxel UPnP daemon that can lead to remote code execution.
An unauthenticated command injection vulnerability in the Zyxel UPnP daemon that can lead to remote code execution.
Unknown (listed as a trending CVE affecting Zyxel products).
Unknown (listed as a trending CVE affecting Zyxel; no technical details provided in the content).
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.