How severe is CVE-2008-1522?

CVE-2008-1522 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2008-1522 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-1522?

CVE-2008-1522 primarily affects Zyxel Prestige 660. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-1522?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2008-1522 published?

CVE-2008-1522 was published on 2008-03-26 and last updated on 2026-06-16.

CVE-2008-1522

CVE-2008-1522 is a high-severity vulnerability in Zyxel Prestige 660 with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-16.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-16
Affected product: Zyxel Prestige 660
Published: 2008-03-26
Last modified: 2026-06-16

Description

ZyXEL 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 the "user" account and (2) "1234" as their default password for the "admin" account, which makes it easier for remote attackers to obtain access.

Frequently asked questions

What is CVE-2008-1522?: ZyXEL 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 the "user" account and (2) "1234" as their default password for the "admin" account, which makes it easier for remote attackers to obtain access.
How severe is CVE-2008-1522?: CVE-2008-1522 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2008-1522 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-1522?: CVE-2008-1522 primarily affects Zyxel Prestige 660. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-1522?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2008-1522 published?: CVE-2008-1522 was published on 2008-03-26 and last updated on 2026-06-16.

References

Affected products (9)

cpe:2.3:h:zyxel:prestige_660:h-d1:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:prestige_660:h-d3:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:prestige_661:hw-d1:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:zynos:3.40:agd.2:*:*:*:*:*:*
cpe:2.3:h:zyxel:zynos:3.40:agl.3:*:*:*:*:*:*
cpe:2.3:h:zyxel:zynos:3.40:ahq.0:*:*:*:*:*:*
cpe:2.3:h:zyxel:zynos:3.40:ahq.3:*:*:*:*:*:*
cpe:2.3:h:zyxel:zynos:3.40:ahz.0:*:*:*:*:*:*
cpe:2.3:h:zyxel:zynos:3.40:atm.0:*:*:*:*:*:*

More vulnerabilities in Zyxel Prestige 660

CVE-2008-1527 — High (CVSS 7.5): ZyXEL Prestige routers, including P-660, P-661, and P-662 models with firmware 3.40(PE9) and 3.40(AGD.2) through…
CVE-2008-1524 — High (CVSS 7.5): The SNMP service on ZyXEL Prestige routers, including P-660 and P-661 models with firmware 3.40(AGD.2) through…
CVE-2008-1521 — Medium (CVSS 6.5): ZyXEL Prestige routers, including P-660 and P-661 models with firmware 3.40(AGD.2) through 3.40(AHQ.3), allow remote…
CVE-2008-1525 — Medium (CVSS 5.0): The default SNMP configuration on ZyXEL Prestige routers, including P-660 and P-661 models with firmware 3.40(AGD.2)…
CVE-2008-1523 — Medium (CVSS 5.0): ZyXEL Prestige routers, including P-660, P-661, and P-662 models with firmware 3.40(AGD.2) through 3.40(AHQ.3), allow…
CVE-2008-1529 — Medium (CVSS 5.0): ZyXEL Prestige routers have a minimum password length for the admin account that is too small, which makes it easier…

All CVEs affecting Zyxel Prestige 660 →

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