How severe is CVE-2007-5691?

CVE-2007-5691 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2007-5691 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-2007-5691?

CVE-2007-5691 affects Mozilla Firefox. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-5691?

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

When was CVE-2007-5691 published?

CVE-2007-5691 was published on 2007-10-29 and last updated on 2026-06-16.

CVE-2007-5691

CVE-2007-5691 is a medium-severity vulnerability in Mozilla Firefox 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: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Mozilla Firefox
Published: 2007-10-29
Last modified: 2026-06-16

Description

ParseFTPList.cpp in Mozilla Firefox 2.0.0.7 allows remote FTP servers to cause a denial of service (application crash) via a crafted reply to an unspecified listing command, related to "reading from invalid pointer."

Frequently asked questions

What is CVE-2007-5691?: ParseFTPList.cpp in Mozilla Firefox 2.0.0.7 allows remote FTP servers to cause a denial of service (application crash) via a crafted reply to an unspecified listing command, related to "reading from invalid pointer."
How severe is CVE-2007-5691?: CVE-2007-5691 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2007-5691 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-2007-5691?: CVE-2007-5691 affects Mozilla Firefox. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-5691?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-5691 published?: CVE-2007-5691 was published on 2007-10-29 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:mozilla:firefox:2.0.0.7:*:*:*:*:*:*:*

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