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Fencer Intel
medium 4.9

CVE-2025-11847 json

A null pointer dereference vulnerability in the IP settings CGI program of the Zyxel VMG3625-T50B firmware versions through 5.50(ABPM.9.6)C…

published 8mo ago modified 4mo ago also EUVD-2025-207553

cvss
4.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.9%
EPSS 1.9% chance of exploitation in 30 days, percentile 80%
public exploits
0
none known

Summary

A null pointer dereference vulnerability in the IP settings CGI program of the Zyxel VMG3625-T50B firmware versions through 5.50(ABPM.9.6)C0 and the Zyxel WX3100-T0 firmware versions through 5.50(ABVL.4.8)C0 could allow an authenticated attacker with administrator privileges to trigger a denial-of-service (DoS) condition by sending a crafted HTTP request.

Patch / fix

  • zyxel ex3510-b1_firmware 5.17\(abup.15.2\)c0
  • zyxel ex3600-t0_firmware 5.70\(acif.2.1\)c0
  • zyxel ex5401-b1_firmware 5.17\(abyo.7.1\)c0
  • zyxel ex5510-b0_firmware 5.17\(abqx.11.1\)c0
  • zyxel ex5512-t0_firmware 5.70\(aceg.5.3\)c0
  • zyxel ex5601-t0_firmware 5.70\(acdz.5.1\)c0
  • zyxel ex5601-t1_firmware 5.70\(acdz.5.1\)c0
  • zyxel ex7501-b0_firmware 5.18\(achn.3.1\)c0
  • zyxel ex7710-b0_firmware 5.18\(acak.1.6\)c0
  • zyxel gm4100-b0_firmware 5.18\(accl.2\)c0
  • zyxel pm7500-00_firmware 5.61\(ackk.1.2\)c0
  • zyxel vmg3625-t50b_firmware 5.50\(abpm.9.7\)c0
  • zyxel vmg4005-b50a_firmware 5.17\(abqa.3.2\)c0
  • zyxel vmg4005-b60a_firmware 5.17\(abqa.3.2\)c0
  • zyxel ax7501-b1_firmware 5.17\(abpc.7.1\)c0
  • zyxel pe3301-00_firmware 5.63\(acmt.2.1\)c0
  • zyxel pe5301-01_firmware 5.63\(acoj.2.1\)c0
  • zyxel pm3100-t0_firmware 5.42\(acbf.4.1\)c0
  • zyxel pm5100-t0_firmware 5.42\(acbf.4.1\)c0
  • zyxel pm5100-t1_firmware 5.42\(acbf.4.1\)c0

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
8mo ago

Exploit prediction

1.92% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 4.9 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 4.9 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Zyxel VMG3625-T50B firmware
  • Zyxel WX3100-T0 firmware

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.