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Vulnerability record · CVE-2004-1540 · published 31 December 2004

CVE-2004-1540: Zyxel prestige vulnerability

Zyxel · Prestige

ZyXEL Prestige 623, 650, and 652 HW Routers, and possibly other versions, with HTTP Remote Administration enabled, does not require a password to access rpFWUpload.html, which allows remote attackers to reset the router configuration file.

5.0 CVSS 2.0 Medium EPSS 6.6% · top 6.4%
5.0CVSS 2.0 base score
6.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
14References, 4 tagged exploit
16 Jun 2026Last modified by NVD

Description

ZyXEL Prestige 623, 650, and 652 HW Routers, and possibly other versions, with HTTP Remote Administration enabled, does not require a password to access rpFWUpload.html, which allows remote attackers to reset the router configuration file.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://marc.info/?l=bugtraq&m=110116413414615&w=2
http://marc.info/?l=bugtraq&m=110135136811344&w=2
http://secunia.com/advisories/13278 Vendor Advisory
http://securitytracker.com/id?1012298 Exploit
http://www.osvdb.org/12108
http://www.securityfocus.com/bid/11723 Exploit
https://exchange.xforce.ibmcloud.com/vulnerabilities/18202
http://marc.info/?l=bugtraq&m=110116413414615&w=2
http://marc.info/?l=bugtraq&m=110135136811344&w=2
http://secunia.com/advisories/13278 Vendor Advisory
http://securitytracker.com/id?1012298 Exploit
http://www.osvdb.org/12108
http://www.securityfocus.com/bid/11723 Exploit
https://exchange.xforce.ibmcloud.com/vulnerabilities/18202

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.8CVE-2007-1586Zyxel zynos vulnerabilityZynOS 3.40 allows remote attackers to cause a denial of service (link restart) by sending a request for the name \M via the SMB Mail Slot Protocol.EPSS 3.1%7.5CVE-2008-1522Zyxel prestige 660 vulnerabilityZyXEL Prestige routers, including P-660 and P-661 models with firmware 3.40(AGD.2) through 3.40(AHQ.3), have (1) "user" as their default password for…EPSS 1.4%7.5CVE-2008-1524Zyxel prestige 660 vulnerabilityThe SNMP service on ZyXEL Prestige routers, including P-660 and P-661 models with firmware 3.40(AGD.2) through 3.40(AHQ.3), has "public" as its defau…EPSS 1.3%7.5CVE-2008-1527Zyxel prestige 660 vulnerabilityZyXEL 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 …EPSS 1.4%7.5CVE-2001-1135Zyxel prestige vulnerabilityZyXEL Prestige 642R and 642R-I routers do not filter the routers' Telnet and FTP ports on the external WAN interface from inside access, allowing som…EPSS 1.5%6.5CVE-2008-1521Zyxel prestige 660 permissions and access controls vulnerabilityZyXEL Prestige routers, including P-660 and P-661 models with firmware 3.40(AGD.2) through 3.40(AHQ.3), allow remote authenticated users to gain priv…EPSS 1.1%5.0CVE-2008-1523Zyxel prestige 660 information exposure vulnerabilityZyXEL Prestige routers, including P-660, P-661, and P-662 models with firmware 3.40(AGD.2) through 3.40(AHQ.3), allow remote authenticated users to o…EPSS 1.2%5.0CVE-2008-1525Zyxel prestige 660 vulnerabilityThe default SNMP configuration on ZyXEL Prestige routers, including P-660 and P-661 models with firmware 3.40(AGD.2) through 3.40(AHQ.3), has a Trust…EPSS 1.2%

Source: NIST National Vulnerability Database (record CVE-2004-1540), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.