How severe is CVE-2015-5921?

CVE-2015-5921 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2015-5921 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-5921?

CVE-2015-5921 affects Apple Iphone Os. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-5921?

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

When was CVE-2015-5921 published?

CVE-2015-5921 was published on 2015-09-18 and last updated on 2026-06-17.

CVE-2015-5921

CVE-2015-5921 is a medium-severity vulnerability in Apple Iphone Os 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-200.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Apple Iphone Os
Published: 2015-09-18
Last modified: 2026-06-17

Description

WebKit in Apple iOS before 9 mishandles "Content-Disposition: attachment" HTTP headers, which might allow man-in-the-middle attackers to obtain sensitive information via unspecified vectors.

Frequently asked questions

What is CVE-2015-5921?: WebKit in Apple iOS before 9 mishandles "Content-Disposition: attachment" HTTP headers, which might allow man-in-the-middle attackers to obtain sensitive information via unspecified vectors.
How severe is CVE-2015-5921?: CVE-2015-5921 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2015-5921 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-5921?: CVE-2015-5921 affects Apple Iphone Os. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-5921?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-5921 published?: CVE-2015-5921 was published on 2015-09-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*

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