CVE-2019-12583: zyxel uag2100_firmware Forced Browsing
CVSS: 9.1v3.0CriticalModified
Published 27-06-2019Last modified 04-08-2024
Vulnerability summary
CVE-2019-12583 is a critical (CVSS 9.1) Forced Browsing vulnerability in zyxel uag2100_firmware. EPSS estimates a 43.93% chance of exploitation in the next 30 days, higher than 98.7% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
9.1/10
010
Critical · v3.0 (NVD)EPSS score
43.93%
0%100%
High · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 0 · Duplicates 1Timeline
- 27-06-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
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 metrics
2 scores · 1 source · 2 versionsCritical 9.1Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:HSourcesSingle source
Medium 6.4Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:P/A:PSourcesSingle source
EPSS trend
Probability
43.93%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
0.00 pp
From 43.93% on 19-09-2026
19-09-202619-10-2026
EPSS score43.93%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (n-thumann.de)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Zyxel14 products
- uag2100_firmware≤ 4.18\(aaiz.1\)c0
- uag4100_firmware≤ 4.18\(aatd.1\)c0
- uag5100_firmware≤ 4.18\(aapn.1\)c0
- usg110_firmware≤ 4.33\(aaph.0\)c0
- usg1100_firmware≤ 4.33\(aapk.0\)c0
1 vendor · 14 products
References
2 links- www.zyxel.com/support/vulnerabilities-related-to-the-Free-Time-feature.shtmlX Refsource CONFIRMPatchVendor Advisory
- n-thumann.de/blog/zyxel-gateways-missing-access-control-in-account-generator-xss/X Refsource MISCExploitThird Party Advisory