How severe is CVE-2007-5855?

CVE-2007-5855 has a CVSS 2.0 base score of 6.4, rated medium severity.

Is CVE-2007-5855 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-5855?

CVE-2007-5855 primarily affects Apple Mac Os X. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-5855?

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

When was CVE-2007-5855 published?

CVE-2007-5855 was published on 2007-12-19 and last updated on 2026-06-16.

CVE-2007-5855

CVE-2007-5855 is a medium-severity vulnerability in Apple Mac Os X with a CVSS 2.0 base score of 6.4. 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-287.

Key facts

Severity: Medium (CVSS 2.0 base score 6.4)
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Apple Mac Os X
Published: 2007-12-19
Last modified: 2026-06-16

Description

Mail in Apple Mac OS X 10.4.11 and 10.5.1, when an SMTP account has been set up using Account Assistant, can use plaintext authentication even when MD5 Challenge-Response authentication is available, which makes it easier for remote attackers to sniff account activity.

Frequently asked questions

What is CVE-2007-5855?: Mail in Apple Mac OS X 10.4.11 and 10.5.1, when an SMTP account has been set up using Account Assistant, can use plaintext authentication even when MD5 Challenge-Response authentication is available, which makes it easier for remote attackers to sniff account activity.
How severe is CVE-2007-5855?: CVE-2007-5855 has a CVSS 2.0 base score of 6.4, rated medium severity.
Is CVE-2007-5855 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-5855?: CVE-2007-5855 primarily affects Apple Mac Os X. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-5855?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-5855 published?: CVE-2007-5855 was published on 2007-12-19 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:o:apple:mac_os_x:10.4.11:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.5.1:*:*:*:*:*:*:*

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