CVE-2021-35036

lowpriority · track · 36OT risk · elevatedEPSS 0.005 · 42 %ileexploit · PoCEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

0.49% (42nd) EPSS

CVSS 3.5 · low

Is it mine?

34 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

A cleartext storage of information vulnerability in the Zyxel VMG3625-T50B firmware version V5.50(ABTL.0)b2k could allow an authenticated attacker to obtain sensitive information from the configuration file.

cvss

Technical severity, 0–10. One row per scoring source.

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.5–6.5

v2.03.5lowAV:N/AC:M/Au:S/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 6.8 · impact 2.9

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · ENISA EU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · security@zyxel.com.twexploitability 2.8 · impact 3.6

v3.16.2mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:Psecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-312USprimary

exploits (1)

Public proof-of-concept and weaponised exploit code.

minanagehsalalma/zyxel-cve-2021-35036-super-admin-password-leakZyxel super-admin credential exposure write-up across CPE/ONT/LTE/5G firmware, with an adapted VMG8825-B50B genpass lab.PoC · poc_in_github

affected products (34)

Products and version ranges known to be affected.

Zyxel VMG3625-T50B firmware≤ V5.50(ABTL.0)b2kenisa_euvdEU
zyxel ax7501-b0 firmware< 5.17\(abpc.2\)c0nvdUScpe:2.3:o:zyxel:ax7501-b0_firmware:*:*:*:*:*:*:*:*
zyxel dx3301-t0 firmware< 5.50\(abvy.3\)c0nvdUScpe:2.3:o:zyxel:dx3301-t0_firmware:*:*:*:*:*:*:*:*
zyxel dx5401-b0 firmware< 5.17\(abyo.2\)c0nvdUScpe:2.3:o:zyxel:dx5401-b0_firmware:*:*:*:*:*:*:*:*
zyxel emg3525-t50b firmware< 5.50\(abpm.7\)c0nvdUScpe:2.3:o:zyxel:emg3525-t50b_firmware:*:*:*:*:*:*:*:*
zyxel emg5523-t50b firmware< 5.50\(abpm.7\)c0nvdUScpe:2.3:o:zyxel:emg5523-t50b_firmware:*:*:*:*:*:*:*:*
zyxel emg5723-t50k firmware< 5.50\(abom.8\)c0nvdUScpe:2.3:o:zyxel:emg5723-t50k_firmware:*:*:*:*:*:*:*:*
zyxel ep240p firmware< 5.40\(abvh.0\)c0a03nvdUScpe:2.3:o:zyxel:ep240p_firmware:*:*:*:*:*:*:*:*
zyxel ex5401-b0 firmware< 5.17\(abyo.2\)c0nvdUScpe:2.3:o:zyxel:ex5401-b0_firmware:*:*:*:*:*:*:*:*
zyxel ex5501-b0 firmware< 5.17\(abry.3\)c0nvdUScpe:2.3:o:zyxel:ex5501-b0_firmware:*:*:*:*:*:*:*:*
zyxel lte3301-plus firmware< 1.00\(abqu.6\)c0nvdUScpe:2.3:o:zyxel:lte3301-plus_firmware:*:*:*:*:*:*:*:*
zyxel lte5388-m804 firmware< 1.00\(abra.6\)c0nvdUScpe:2.3:o:zyxel:lte5388-m804_firmware:*:*:*:*:*:*:*:*
zyxel lte5388-s905 firmware< 1.00\(abvi.6\)c0nvdUScpe:2.3:o:zyxel:lte5388-s905_firmware:*:*:*:*:*:*:*:*
zyxel lte5398-m904 firmware< 1.00\(abqv.2\)c0nvdUScpe:2.3:o:zyxel:lte5398-m904_firmware:*:*:*:*:*:*:*:*
zyxel lte7240-m403 firmware< 2.00\(abmg.6\)c0nvdUScpe:2.3:o:zyxel:lte7240-m403_firmware:*:*:*:*:*:*:*:*
zyxel lte7461-m602 firmware< 2.00\(abqn.6\)c0nvdUScpe:2.3:o:zyxel:lte7461-m602_firmware:*:*:*:*:*:*:*:*
zyxel lte7480-m804 firmware< 1.00\(abra.6\)c0nvdUScpe:2.3:o:zyxel:lte7480-m804_firmware:*:*:*:*:*:*:*:*
zyxel lte7480-s905 firmware< 2.00\(abqt.6\)c0nvdUScpe:2.3:o:zyxel:lte7480-s905_firmware:*:*:*:*:*:*:*:*
zyxel lte7485-s905 firmware< 1.00\(abvn.6\)c0nvdUScpe:2.3:o:zyxel:lte7485-s905_firmware:*:*:*:*:*:*:*:*
zyxel lte7490-m804 firmware< v1.00\(abqy.5\)c0nvdUScpe:2.3:o:zyxel:lte7490-m804_firmware:*:*:*:*:*:*:*:*

showing 20 of 34

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2022-03-01modified 2026-06-17

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references (5)

External citations — patches, advisories, analysis.

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