How severe is CVE-2010-0463?

CVE-2010-0463 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2010-0463 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-0463?

CVE-2010-0463 primarily affects Horde Imp. In total, 41 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-0463?

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

When was CVE-2010-0463 published?

CVE-2010-0463 was published on 2010-01-29 and last updated on 2026-06-16.

CVE-2010-0463

CVE-2010-0463 is a medium-severity vulnerability in Horde Imp 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. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Horde Imp
Published: 2010-01-29
Last modified: 2026-06-16

Description

Horde IMP 4.3.6 and earlier does not request that the web browser avoid DNS prefetching of domain names contained in e-mail messages, which makes it easier for remote attackers to determine the network location of the webmail user by logging DNS requests.

Frequently asked questions

What is CVE-2010-0463?: Horde IMP 4.3.6 and earlier does not request that the web browser avoid DNS prefetching of domain names contained in e-mail messages, which makes it easier for remote attackers to determine the network location of the webmail user by logging DNS requests.
How severe is CVE-2010-0463?: CVE-2010-0463 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2010-0463 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-0463?: CVE-2010-0463 primarily affects Horde Imp. In total, 41 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-0463?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-0463 published?: CVE-2010-0463 was published on 2010-01-29 and last updated on 2026-06-16.

References

Affected products (41)

cpe:2.3:a:horde:imp:*:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:2.0:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:2.2:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:2.2.1:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:2.2.2:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:2.2.3:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:2.2.4:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:2.2.5:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:2.2.6:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:2.2.7:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:2.2.8:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:2.3:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:3.0:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:3.1:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:3.1.2:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:3.2:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:3.2.1:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:3.2.2:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:3.2.3:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:3.2.4:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:3.2.5:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:3.2.6:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:3.2.7:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:3.2.7:rc1:*:*:*:*:*:*
cpe:2.3:a:horde:imp:4.0:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:4.0.1:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:4.0.2:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:4.0.3:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:4.0.4:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:4.1.3:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:4.1.5:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:4.1.6:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:4.2:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:4.2.1:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:4.2.2:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:4.3:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:4.3.1:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:4.3.2:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:4.3.3:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:4.3.4:*:*:*:*:*:*:*

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