What is the CVSS score of CVE-2019-9955?

CVE-2019-9955 has a CVSS 3.0 base score of 6.1 (Medium). CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 20.9%.

Is there a public PoC exploit available for CVE-2019-9955?

Yes, a public proof-of-concept exploit is available for CVE-2019-9955. Prioritise patching immediately. EPSS: 20.9%.

Is there a patch available for CVE-2019-9955?

Yes, a patch is available for CVE-2019-9955. Update the affected software to the latest version immediately.

Zywall 110 Firmware CVE-2019-9955

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2019-04-22 cve@mitre.org

XSS Zyxel Zywall 110 Firmware Zywall 1100 Firmware Zywall 310 Firmware Atp200 Firmware Atp500 Firmware Atp800 Firmware Usg20 Vpn Firmware Usg20W Vpn Firmware Usg40 Firmware Usg40W Firmware Usg60 Firmware Usg60W Firmware Usg110 Firmware Usg210 Firmware Usg310 Firmware Usg1100 Firmware Usg1900 Firmware Usg2200 Vpn Firmware Vpn50 Firmware Vpn100 Firmware Vpn300 Firmware

6.1

CVSS 3.0 · NVD

Severity by source

NVD PRIMARY

6.1 MEDIUM

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

CVE Published

Apr 22, 2019 - 20:29 nvd

MEDIUM 6.1

DescriptionNVD

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.

AnalysisAI

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. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. 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. Affected products include: Zyxel Atp200 Firmware, Zyxel Atp500 Firmware, Zyxel Atp800 Firmware, Zyxel Usg20-Vpn Firmware, Zyxel Usg20W-Vpn Firmware.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.