Vulnerability Monitor

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CVE-2019-7391

ZyXEL VMG3312-B10B DSL-491HNU-B1B v2 devices allow login/login-page.cgi CSRF.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.8, indicating it can be exploited remotely over the network with relatively low complexity though user interaction is required and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 4 products from zyxel, from zyxel, from zyxel and 1 other, organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2019, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2019-03-21T16:01:12.470

Last Modified

2024-11-21T04:48:07.993

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 8.8 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

6.4

Weaknesses

Type: Primary
CWE-352

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	zyxel	dsl-491hnu-b10b_firmware	-	Yes
Hardware	zyxel	dsl-491hnu-b10b	-	No
Operating System	zyxel	dsl-491hnu-b1b_v2_firmware	-	Yes
Hardware	zyxel	dsl-491hnu-b1b_v2	-	No

References

http://packetstormsecurity.com/files/151550/Zyxel-VMG3312-B10B-DSL-491HNU-B1-V2-Cross-Site-Request-Forgery.html Exploit, Third Party Advisory, VDB Entry ([email protected])
https://twitter.com/h1_yusuf Third Party Advisory ([email protected])
https://www.exploit-db.com/exploits/46326/ Exploit, Third Party Advisory, VDB Entry ([email protected])
https://www.owasp.org/index.php/Cross-Site_Request_Forgery_%28CSRF%29 ([email protected])
http://packetstormsecurity.com/files/151550/Zyxel-VMG3312-B10B-DSL-491HNU-B1-V2-Cross-Site-Request-Forgery.html Exploit, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://twitter.com/h1_yusuf Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.exploit-db.com/exploits/46326/ Exploit, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://www.owasp.org/index.php/Cross-Site_Request_Forgery_%28CSRF%29 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For zyxel's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.