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CVE-2008-1527

21
FAUCET Score

CVE-2008-1527 describes a replay attack vulnerability in ZyXEL Prestige routers, specifically models P-660, P-661, and P-662 running certain firmware versions. This flaw allows remote attackers to gain unauthorized access by reusing a hash string from the hiddenPassword field during HTTP authentication. With a CVSS score of 7.5, this vulnerability is considered highly severe due to its network-based attack vector, low attack complexity, and potential for partial compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

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
1.42%
Probability of exploitation in next 30 days
EPSS Percentile
70.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0142 is in the 51st percentile among its peer group of 51,553 CVEs.

Social Chatter

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