Vulnerability Monitor

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CVE-2008-1527

ZyXEL Prestige routers, including P-660, P-661, and P-662 models with firmware 3.40(PE9) and 3.40(AGD.2) through 3.40(AHQ.3), support authentication over HTTP via a hash string in the hiddenPassword field, which allows remote attackers to obtain access via a replay attack.

Security Impact Summary

CVE-2008-1527 is a security vulnerability that . Impacting 3 products from zyxel, from zyxel, from zyxel organizations running these solutions should prioritize assessment and patching.

Historical Context

Originally identified in 2008, this vulnerability predates many modern security frameworks and practices. The vulnerability landscape of that era was characterized by different threat models and less mature defense mechanisms compared to contemporary standards.

Published

2008-03-26T10:44:00.000

Last Modified

2025-04-09T00:30:58.490

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 7.5 (HIGH)

CVSSv2 Vector

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

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

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
CWE-310

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Hardware	zyxel	prestige_660	h-d1	Yes
Hardware	zyxel	prestige_660	h-d3	Yes
Hardware	zyxel	prestige_661	hw-d1	Yes
Hardware	zyxel	zynos	3.40	Yes
Hardware	zyxel	zynos	3.40	Yes
Hardware	zyxel	zynos	3.40	Yes
Hardware	zyxel	zynos	3.40	Yes
Hardware	zyxel	zynos	3.40	Yes
Hardware	zyxel	zynos	3.40	Yes

References

http://www.gnucitizen.org/projects/router-hacking-challenge/ ([email protected])
http://www.procheckup.com/Hacking_ZyXEL_Gateways.pdf ([email protected])
http://www.securityfocus.com/archive/1/489009/100/0/threaded ([email protected])
http://www.gnucitizen.org/projects/router-hacking-challenge/ (af854a3a-2127-422b-91ae-364da2661108)
http://www.procheckup.com/Hacking_ZyXEL_Gateways.pdf (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/archive/1/489009/100/0/threaded (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.