Medium [CVE-2026-73075] Out-of-bounds Access in Popup Opacity Handling
This medium-severity Red Hat Linux advisory covers CVE-2026-73075.
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Summary
A flaw was found in Vim, an open-source text editor. This vulnerability involves an out-of-bounds memory access within the popup opacity handling feature.
A local attacker could exploit this by using specially crafted Vim script, leading to an out-of-bounds read and a limited out-of-bounds write. While the editor is expected to continue functioning, this could potentially result in unexpected behavior or information disclosure.
Exploitation requires a local attacker to execute specially crafted Vim script that utilizes specific popup window features, making user interaction a prerequisite.
The impact is typically limited to an out-of-bounds read and a constrained write, which may lead to unexpected behavior but is not expected to result in immediate system compromise or arbitrary code execution. None of the Red Hat products ship this vulnerable code.
Hence, are not affected. Red Hat severity: Moderate — CVSS 4.4 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L).
Weakness: CWE-125. Red Hat lists Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Hardened Images; Red Hat OpenShift Container Platform 4 as not affected.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 3 hours ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 3 hours ago·verify at source
Mitigation checklist
- To mitigate this issue, users should avoid running untrusted Vim scripts or installing untrusted plugins. This vulnerability is triggered by the execution of malicious Vim script code, not merely by opening a file.
Official advisory · high-confidence parse· fetched 3 hours ago·verify at source
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