How severe is CVE-2007-4999?

CVE-2007-4999 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2007-4999 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-4999?

CVE-2007-4999 primarily affects Pidgin. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-4999?

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

When was CVE-2007-4999 published?

CVE-2007-4999 was published on 2007-10-29 and last updated on 2026-06-16.

CVE-2007-4999

CVE-2007-4999 is a medium-severity vulnerability in Pidgin 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Pidgin
Published: 2007-10-29
Last modified: 2026-06-16

Description

libpurple in Pidgin 2.1.0 through 2.2.1, when using HTML logging, allows remote attackers to cause a denial of service (NULL dereference and application crash) via a message that contains invalid HTML data, a different vector than CVE-2007-4996.

Frequently asked questions

What is CVE-2007-4999?: libpurple in Pidgin 2.1.0 through 2.2.1, when using HTML logging, allows remote attackers to cause a denial of service (NULL dereference and application crash) via a message that contains invalid HTML data, a different vector than CVE-2007-4996.
How severe is CVE-2007-4999?: CVE-2007-4999 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2007-4999 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-4999?: CVE-2007-4999 primarily affects Pidgin. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-4999?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-4999 published?: CVE-2007-4999 was published on 2007-10-29 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:a:pidgin:pidgin:2.1.0:*:*:*:*:*:*:*
cpe:2.3:a:pidgin:pidgin:2.2.0:*:*:*:*:*:*:*
cpe:2.3:a:pidgin:pidgin:2.2.1:*:*:*:*:*:*:*

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