How severe is CVE-2008-1243?

CVE-2008-1243 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2008-1243 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-1243?

CVE-2008-1243 affects Linksys Wrt300n. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2008-1243?

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

When was CVE-2008-1243 published?

CVE-2008-1243 was published on 2008-03-10 and last updated on 2026-06-16.

CVE-2008-1243

CVE-2008-1243 is a medium-severity vulnerability in Linksys Wrt300n 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-79.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Linksys Wrt300n
Published: 2008-03-10
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability on the Linksys WRT300N router with firmware 2.00.20, when Mozilla Firefox or Apple Safari is used, allows remote attackers to inject arbitrary web script or HTML via the dyndns_domain parameter to the default URI.

Frequently asked questions

What is CVE-2008-1243?: Cross-site scripting (XSS) vulnerability on the Linksys WRT300N router with firmware 2.00.20, when Mozilla Firefox or Apple Safari is used, allows remote attackers to inject arbitrary web script or HTML via the dyndns_domain parameter to the default URI.
How severe is CVE-2008-1243?: CVE-2008-1243 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2008-1243 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-1243?: CVE-2008-1243 affects Linksys Wrt300n. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2008-1243?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-1243 published?: CVE-2008-1243 was published on 2008-03-10 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:h:linksys:wrt300n:*:*:2.00.20:*:*:*:*:*

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