How severe is CVE-2026-20651?

CVE-2026-20651 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-20651 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-20651?

CVE-2026-20651 affects Apple Macos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-20651?

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

Does CVE-2026-20651 have an EU (EUVD) identifier?

Yes. CVE-2026-20651 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-15045.

When was CVE-2026-20651 published?

CVE-2026-20651 was published on 2026-03-25 and last updated on 2026-06-17.

CVE-2026-20651

CVE-2026-20651 is a medium-severity vulnerability in Apple Macos with a CVSS 3.x base score of 6.2. 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-377.

Key facts

Severity: Medium (CVSS 3.x base score 6.2)
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-15045
Weakness: CWE-377
Affected product: Apple Macos
Published: 2026-03-25
Last modified: 2026-06-17

Description

A privacy issue was addressed with improved handling of temporary files. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.4, macOS Tahoe 26.3. An app may be able to access sensitive user data.

Frequently asked questions

What is CVE-2026-20651?: A privacy issue was addressed with improved handling of temporary files. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.4, macOS Tahoe 26.3. An app may be able to access sensitive user data.
How severe is CVE-2026-20651?: CVE-2026-20651 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-20651 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-20651?: CVE-2026-20651 affects Apple Macos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-20651?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-20651 have an EU (EUVD) identifier?: Yes. CVE-2026-20651 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-15045.
When was CVE-2026-20651 published?: CVE-2026-20651 was published on 2026-03-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

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Other CWE-377 (Insecure Temporary File) vulnerabilities

CVE-2011-4119 — Critical (CVSS 9.8): caml-light <= 0.75 uses mktemp() insecurely, and also does unsafe things in /tmp during make install.
CVE-2012-2666 — Critical (CVSS 9.8): golang/go in 1.0.2 fixes all.bash on shared machines. dotest() in src/pkg/debug/gosym/pclntab_test.go creates a…
CVE-2015-5224 — Critical (CVSS 9.8): The mkostemp function in login-utils in util-linux when used incorrectly allows remote attackers to cause file name…
CVE-2025-14307 — High (CVSS 8.1): An insecure temporary file creation vulnerability exists in the AutoExtract component of Robocode version 1.9.3.6. The…
CVE-2023-43498 — High (CVSS 8.1): In Jenkins 2.423 and earlier, LTS 2.414.1 and earlier, processing file uploads using MultipartFormDataParser creates…
CVE-2025-46369 — High (CVSS 7.8): Dell Alienware Command Center 6.x (AWCC), versions prior to 6.10.15.0, contains an Insecure Temporary File…

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