CVE-2019-12583

mediumpriority · attend · 51EPSS 0.439 · 99 %ileEUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

43.9% (99th) EPSS

CVSS 6.4 · medium

Is it mine?

15 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-26

Missing Access Control in the "Free Time" component of several Zyxel UAG, USG, and ZyWall devices allows a remote attacker to generate guest accounts by directly accessing the account generator. This can lead to unauthorised network access or Denial of Service.

cvss

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

9.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 6.4–9.1

v2.06.4mediumAV:N/AC:L/Au:N/C:N/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 4.9

v3.09.1criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.2

v3.09.1criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-425USprimary

affected products (15)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
zyxel uag2100 firmware≤ 4.18$aaiz.1$c0nvdUScpe:2.3:o:zyxel:uag2100_firmware:*:*:*:*:*:*:*:*
zyxel uag4100 firmware≤ 4.18$aatd.1$c0nvdUScpe:2.3:o:zyxel:uag4100_firmware:*:*:*:*:*:*:*:*
zyxel uag5100 firmware≤ 4.18$aapn.1$c0nvdUScpe:2.3:o:zyxel:uag5100_firmware:*:*:*:*:*:*:*:*
zyxel usg110 firmware≤ 4.33$aaph.0$c0nvdUScpe:2.3:o:zyxel:usg110_firmware:*:*:*:*:*:*:*:*
zyxel usg1100 firmware≤ 4.33$aapk.0$c0nvdUScpe:2.3:o:zyxel:usg1100_firmware:*:*:*:*:*:*:*:*
zyxel usg1900 firmware≤ 4.33$aapl.0$c0nvdUScpe:2.3:o:zyxel:usg1900_firmware:*:*:*:*:*:*:*:*
zyxel usg210 firmware≤ 4.33$aapi.0$c0nvdUScpe:2.3:o:zyxel:usg210_firmware:*:*:*:*:*:*:*:*
zyxel usg2200-vpn firmware≤ 4.33$abae.0$c0nvdUScpe:2.3:o:zyxel:usg2200-vpn_firmware:*:*:*:*:*:*:*:*
zyxel usg310 firmware≤ 4.33$aapj.0$c0nvdUScpe:2.3:o:zyxel:usg310_firmware:*:*:*:*:*:*:*:*
zyxel zywall 110 firmware≤ 4.33$aaaa.0$c0nvdUScpe:2.3:o:zyxel:zywall_110_firmware:*:*:*:*:*:*:*:*
zyxel zywall 1100 firmware≤ 4.33$aaac.0$c0nvdUScpe:2.3:o:zyxel:zywall_1100_firmware:*:*:*:*:*:*:*:*
zyxel zywall 310 firmware≤ 4.33$aaab.0$c0nvdUScpe:2.3:o:zyxel:zywall_310_firmware:*:*:*:*:*:*:*:*
zyxel zywall vpn100 firmware≤ 10.02$abfv.0$c0nvdUScpe:2.3:o:zyxel:zywall_vpn100_firmware:*:*:*:*:*:*:*:*
zyxel zywall vpn300 firmware≤ 10.02$abfc.0$c0nvdUScpe:2.3:o:zyxel:zywall_vpn300_firmware:*:*:*:*:*:*:*:*

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 2019-06-27modified 2026-06-17

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references (7)

External citations — patches, advisories, analysis.

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