How severe is CVE-2011-0746?

CVE-2011-0746 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2011-0746 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-0746?

CVE-2011-0746 affects Zyxel O2 Dsl Router Classic. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-0746?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-0746 published?

CVE-2011-0746 was published on 2011-04-13 and last updated on 2026-06-16.

CVE-2011-0746

CVE-2011-0746 is a medium-severity vulnerability in Zyxel O2 Dsl Router Classic with a CVSS 2.0 base score of 4.3. 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-352.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Zyxel O2 Dsl Router Classic
Published: 2011-04-13
Last modified: 2026-06-16

Description

Cross-site request forgery (CSRF) vulnerability in Forms/PortForwarding_Edit_1 on the ZyXEL O2 DSL Router Classic allows remote attackers to hijack the authentication of administrators for requests that insert cross-site scripting (XSS) sequences via the PortRule_Name parameter.

Frequently asked questions

What is CVE-2011-0746?: Cross-site request forgery (CSRF) vulnerability in Forms/PortForwarding_Edit_1 on the ZyXEL O2 DSL Router Classic allows remote attackers to hijack the authentication of administrators for requests that insert cross-site scripting (XSS) sequences via the PortRule_Name parameter.
How severe is CVE-2011-0746?: CVE-2011-0746 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2011-0746 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-0746?: CVE-2011-0746 affects Zyxel O2 Dsl Router Classic. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-0746?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-0746 published?: CVE-2011-0746 was published on 2011-04-13 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:h:zyxel:o2_dsl_router_classic:*:*:*:*:*:*:*:*

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