How severe is CVE-2013-2303?

CVE-2013-2303 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2013-2303 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-2303?

CVE-2013-2303 primarily affects Fenrir-inc Sleipnir. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-2303?

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

When was CVE-2013-2303 published?

CVE-2013-2303 was published on 2013-04-16 and last updated on 2026-06-16.

CVE-2013-2303

CVE-2013-2303 is a medium-severity vulnerability in Fenrir-inc Sleipnir with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Fenrir-inc Sleipnir
Published: 2013-04-16
Last modified: 2026-06-16

Description

Sleipnir 4.0.0.4000 and earlier on Windows allows remote attackers to spoof the SSL lock icon and address-bar colors via unspecified vectors.

Frequently asked questions

What is CVE-2013-2303?: Sleipnir 4.0.0.4000 and earlier on Windows allows remote attackers to spoof the SSL lock icon and address-bar colors via unspecified vectors.
How severe is CVE-2013-2303?: CVE-2013-2303 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2013-2303 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-2303?: CVE-2013-2303 primarily affects Fenrir-inc Sleipnir. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-2303?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-2303 published?: CVE-2013-2303 was published on 2013-04-16 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:fenrir-inc:sleipnir:*:-:*:*:*:windows:*:*
cpe:2.3:a:fenrir-inc:sleipnir:3.9.1.4000:-:*:*:*:windows:*:*

More vulnerabilities in Fenrir-inc Sleipnir

CVE-2016-7831 — Medium (CVSS 6.1): Sleipnir 4 Black Edition for Mac 4.5.3 and earlier and Sleipnir 4 for Mac 4.5.3 and earlier (Mac App Store) may allow a…
CVE-2010-3918 — Medium (CVSS 5.8): Fenrir Sleipnir 2.9.6 and earlier does not prevent interaction between web script and the clipboard, which allows…

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