Critical severity · published Feb 24, 2026
CVE-2025-13942
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…
9.8
CVSS
1.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 67% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EF
EX3510-B0 firmware · Zyxel
<= 5.17(ABUP.15.1)C0 · source: vendor, NVD
DF
Dx4510-b0 Firmware · Zyxel
before 5.17\(abyl.10.1\)c0 · source: NVD
DF
Dx4510-b1 Firmware · Zyxel
before 5.17\(abyl.10.1\)c0 · source: NVD
EF
Ee6510-10 Firmware · Zyxel
before 5.19\(acjq.4.1\)c0 · source: NVD
EF
Emg6726-b10a Firmware · Zyxel
before 5.13\(abnp.8.2\)c1 · source: NVD
EF
Ex2210-t0 Firmware · Zyxel
before 5.50\(acdi.2.4\)c0 · source: NVD
EF
Ex3510-b1 Firmware · Zyxel
before 5.17\(abup.15.2\)c0 · source: NVD
EF
Ex5510-b0 Firmware · Zyxel
before 5.17\(abqx.11.1\)c0 · source: NVD
EF
Ex5512-t0 Firmware · Zyxel
before 5.70\(aceg.5.4\)c0 · source: NVD
EF
Ex7710-b0 Firmware · Zyxel
before 5.18\(acak.1.6\)c0 · source: NVD
LF
Lte3301-plus Firmware · Zyxel
before 1.00\(abqu.9\)c0 · source: NVD
NL
Nebula Lte3301-plus Firmware · Zyxel
before 1.18\(acca.6\)v0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-13942
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-13942
Vendor Advisory
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-null-pointer-dereference-and-command-injection-vulnerabilities-in-certain-4g-lte-5g-nr-cpe-dsl-ethernet-cpe-fiber-onts-security-routers-and-wireless-extenders-02-24-2026
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