How severe is CVE-2016-4645?

CVE-2016-4645 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2016-4645 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-4645?

CVE-2016-4645 affects Apple Mac Os X. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-4645?

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

When was CVE-2016-4645 published?

CVE-2016-4645 was published on 2016-07-22 and last updated on 2026-06-17.

CVE-2016-4645

CVE-2016-4645 is a low-severity vulnerability in Apple Mac Os X with a CVSS 3.x base score of 3.3. 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: Low (CVSS 3.x base score 3.3)
CVSS v2: 2.1
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Apple Mac Os X
Published: 2016-07-22
Last modified: 2026-06-17

Description

CFNetwork in Apple OS X before 10.11.6 uses weak permissions for web-browser cookies, which allows local users to obtain sensitive information via unspecified vectors.

Frequently asked questions

What is CVE-2016-4645?: CFNetwork in Apple OS X before 10.11.6 uses weak permissions for web-browser cookies, which allows local users to obtain sensitive information via unspecified vectors.
How severe is CVE-2016-4645?: CVE-2016-4645 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2016-4645 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-4645?: CVE-2016-4645 affects Apple Mac Os X. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-4645?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-4645 published?: CVE-2016-4645 was published on 2016-07-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*

More vulnerabilities in Apple Mac Os X

CVE-2018-4310 — Critical (CVSS 10.0): An access issue was addressed with additional sandbox restrictions. This issue affected versions prior to iOS 12, macOS…
CVE-2019-6235 — Critical (CVSS 10.0): A memory corruption issue was addressed with improved validation. This issue is fixed in iOS 12.1.3, macOS Mojave…
CVE-2018-4229 — Critical (CVSS 10.0): An issue was discovered in certain Apple products. macOS before 10.13.5 is affected. The issue involves the "Grand…
CVE-2018-4091 — Critical (CVSS 10.0): An issue was discovered in certain Apple products. macOS before 10.13.3 is affected. The issue involves the "Sandbox"…
CVE-2015-8659 — Critical (CVSS 10.0): The idle stream handling in nghttp2 before 1.6.0 allows attackers to have unspecified impact via unknown vectors, aka a…
CVE-2015-7071 — Critical (CVSS 10.0): The File Bookmark component in Apple OS X before 10.11.2 allows attackers to bypass a sandbox protection mechanism for…

All CVEs affecting Apple Mac Os X →

Other CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities

CVE-2026-27604 — Critical (CVSS 10.0): FOSSBilling is a free, open-source billing and client management system. Starting in version 0.5.4 and prior to version…
CVE-2026-40965 — Critical (CVSS 10.0): Cloud Foundry UAA versions v76.12.0 through v78.12.0 are vulnerable to a private key exposure. The server contains a…
CVE-2026-42826 — Critical (CVSS 10.0): Exposure of sensitive information to an unauthorized actor in Azure DevOps allows an unauthorized attacker to disclose…
CVE-2025-29270 — Critical (CVSS 10.0): Incorrect access control in the realtime.cgi endpoint of Deep Sea Electronics devices DSE855 v1.1.0 to v1.1.26 allows…
CVE-2025-61481 — Critical (CVSS 10.0): An issue in MikroTik RouterOS v.7.14.2 and SwOS v.2.18 exposes the WebFig management interface over cleartext HTTP by…
CVE-2025-53624 — Critical (CVSS 10.0): The Docusaurus gists plugin adds a page to your Docusaurus instance, displaying all public gists of a GitHub user.…

Browse all CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities →