CVE-2022-0734: zyxel atp series firmware Cross-site Scripting
Vulnerability summary
CVE-2022-0734 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in zyxel atp series firmware. EPSS estimates a 9.40% chance of exploitation in the next 30 days, higher than 95.3% of scored vulnerabilities.
Timeline
- 24-05-2022PublishedVulnerability first disclosed.
- 02-08-2024Last modifiedVulnerability information updated.
Description
A cross-site scripting vulnerability was identified in the CGI program of Zyxel USG/ZyWALL series firmware versions 4.35 through 4.70, USG FLEX series firmware versions 4.50 through 5.20, ATP series firmware versions 4.35 through 5.20, and VPN series firmware versions 4.35 through 5.20, that could allow an attacker to obtain some information stored in the user's browser, such as cookies or session tokens, via a malicious script.
CVSS metrics
3 scores · 2 sources · 2 versions- CVE.orgCNA5.8MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:NDiffers
EPSS trend
Probability
9.40%
Chance of exploitation in the next 30 days
Percentile
95%
Versus all other CVEs
30-day change
+0.22 pp
From 9.19% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Zyxel36 products
- atp series firmware4.35 through 5.20
- atp100_firmware≥ 4.35, ≤ 5.20
- atp100w_firmware≥ 4.35, ≤ 5.20
- atp200_firmware≥ 4.35, ≤ 5.20
- atp500_firmware≥ 4.35, ≤ 5.20
1 vendor · 36 products
References
1 links- www.zyxel.com/support/multiple-vulnerabilities-of-firewalls-AP-controllers-and-APs.shtmlX Refsource CONFIRMVendor Advisory