CVE-2019-9955

high-risk
Published 2019-04-22

On Zyxel ATP200, ATP500, ATP800, USG20-VPN, USG20W-VPN, USG40, USG40W, USG60, USG60W, USG110, USG210, USG310, USG1100, USG1900, USG2200-VPN, ZyWALL 110, ZyWALL 310, ZyWALL 1100 devices, the security firewall login page is vulnerable to Reflected XSS via the unsanitized 'mp_idx' parameter.

Do I need to act?

!
10.7% chance of exploitation in next 30 days
EPSS score — higher than 89% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
!
1 public exploit available
46706
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.1/10 Medium
NETWORK / LOW complexity

Affected Products (20)

Affected Vendors

Zyxel

References (10)

Exploit http://packetstormsecurity.com/files/152525/Zyxel-ZyWall-Cross-Site-Scripting.ht...
Mailing List http://seclists.org/fulldisclosure/2019/Apr/22
Exploit https://www.exploit-db.com/exploits/46706/
Patch https://www.securitymetrics.com/blog/Zyxel-Devices-Vulnerable-Cross-Site-Scripti...
Vendor Advisory https://www.zyxel.com/support/reflected-cross-site-scripting-vulnerability-of-fi...
Exploit http://packetstormsecurity.com/files/152525/Zyxel-ZyWall-Cross-Site-Scripting.ht...
Mailing List http://seclists.org/fulldisclosure/2019/Apr/22
Exploit https://www.exploit-db.com/exploits/46706/
Patch https://www.securitymetrics.com/blog/Zyxel-Devices-Vulnerable-Cross-Site-Scripti...
Vendor Advisory https://www.zyxel.com/support/reflected-cross-site-scripting-vulnerability-of-fi...
54
/ 100
high-risk
Severity 23/34 · High
Exploitability 11/34 · Low
Exposure 20/34 · Moderate