How severe is CVE-2026-73075?

CVE-2026-73075 has a CVSS 3.x base score of 3.9, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-73075 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-73075?

CVE-2026-73075 affects Vim. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-73075?

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

When was CVE-2026-73075 published?

CVE-2026-73075 was published on 2026-08-11 and last updated on 2026-10-06.

CVE-2026-73075

CVE-2026-73075 is a low-severity vulnerability in Vim with a CVSS 3.x base score of 3.9. 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-124.

Key facts

Severity: Low (CVSS 3.x base score 3.9)
CVSS v4: 4.6
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-124
Affected product: Vim
Published: 2026-08-11
Last modified: 2026-10-06

Description

Vim is an open source, command line text editor. From 9.2.0469 until 9.2.0843, popup_mark_opacity_zindex() in src/popupwin.c can use a negative w_winrow for a text-property-anchored popup with clipwindow and opacity, indexing before the screen array instead of accounting for w_popup_topoff and causing an out-of-bounds read and conditional write. This issue is fixed in version 9.2.0843.

Frequently asked questions

What is CVE-2026-73075?: Vim is an open source, command line text editor. From 9.2.0469 until 9.2.0843, popup_mark_opacity_zindex() in src/popupwin.c can use a negative w_winrow for a text-property-anchored popup with clipwindow and opacity, indexing before the screen array instead of accounting for w_popup_topoff and causing an out-of-bounds read and conditional write. This issue is fixed in version 9.2.0843.
How severe is CVE-2026-73075?: CVE-2026-73075 has a CVSS 3.x base score of 3.9, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-73075 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-73075?: CVE-2026-73075 affects Vim. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-73075?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-73075 published?: CVE-2026-73075 was published on 2026-08-11 and last updated on 2026-10-06.

References

https://github.com/vim/vim/security/advisories/GHSA-pmvp-6rcj-98p4

Affected products (1)

cpe:2.3:a:vim:vim:*:*:*:*:*:*:*:*

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