How severe is CVE-2014-4366?

CVE-2014-4366 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2014-4366 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-4366?

CVE-2014-4366 primarily affects Apple Iphone Os. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-4366?

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

When was CVE-2014-4366 published?

CVE-2014-4366 was published on 2014-09-18 and last updated on 2026-06-17.

CVE-2014-4366

CVE-2014-4366 is a medium-severity vulnerability in Apple Iphone Os 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-255.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-255
Affected product: Apple Iphone Os
Published: 2014-09-18
Last modified: 2026-06-17

Description

Mail in Apple iOS before 8 does not prevent sending a LOGIN command to a LOGINDISABLED IMAP server, which allows remote attackers to obtain sensitive cleartext information by sniffing the network.

Frequently asked questions

What is CVE-2014-4366?: Mail in Apple iOS before 8 does not prevent sending a LOGIN command to a LOGINDISABLED IMAP server, which allows remote attackers to obtain sensitive cleartext information by sniffing the network.
How severe is CVE-2014-4366?: CVE-2014-4366 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2014-4366 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-4366?: CVE-2014-4366 primarily affects Apple Iphone Os. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-4366?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-4366 published?: CVE-2014-4366 was published on 2014-09-18 and last updated on 2026-06-17.

References

Affected products (10)

cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:7.0:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:7.0.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:7.0.2:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:7.0.3:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:7.0.4:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:7.0.5:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:7.0.6:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:7.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:7.1.1:*:*:*:*:*:*:*

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