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CVE-2008-1524

19
FAUCET Score

CVE-2008-1524 describes a critical vulnerability in ZyXEL Prestige P-660 and P-661 routers running specific firmware versions, where the SNMP service defaults to "public" for both read and write community strings. This allows unauthenticated remote attackers to perform administrative actions, such as reading sensitive information like Dynamic DNS passwords or injecting cross-site scripting (XSS) into system variables. With a CVSS score of 7.5, this vulnerability is considered highly severe due to its network-based attack vector, low complexity, and potential for partial compromise of confidentiality, integrity, and availability. While no active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB) has been identified, and community discussion remains minimal, the inherent risk of default credentials makes this a significant concern for affected devices.

Impacted Technologies

VendorProductVersion(s)CPE
h-d1CPE matchmatch criteria
cpe:2.3:h:zyxel:prestige_660:h-d1:*:*:*:*:*:*:*
h-d3CPE matchmatch criteria
cpe:2.3:h:zyxel:prestige_660:h-d3:*:*:*:*:*:*:*
hw-d1CPE matchmatch criteria
cpe:2.3:h:zyxel:prestige_661:hw-d1:*:*:*:*:*:*:*
3.40CPE matchmatch criteria
cpe:2.3:h:zyxel:zynos:3.40:agd.2:*:*:*:*:*:*
3.40CPE matchmatch criteria
cpe:2.3:h:zyxel:zynos:3.40:agl.3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.32%
Probability of exploitation in next 30 days
EPSS Percentile
68.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0132 is in the 48th percentile among its peer group of 51,553 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

gnucitizen.org / projects/router-hacking-challenge
procheckup.com / Hacking_ZyXEL_Gateways.pdf
securityfocus.com / archive/1/489009/100/0/threaded