Security readout for executives and security teams
CVE-2026-28421 affects Vim before 9.2.0077. A specially crafted Vim swap file can trigger memory corruption or a crash during swap file recovery. Business impact is mainly workstation or server disruption and possible limited data exposure or modification, but a user must open or recover the malicious file locally. Systems with Vim versions earlier than 9.2.0077 are exposed, especially developer workstations, administrator jump hosts, and servers where users recover Vim swap files from untrusted locations. Treat as routine but timely patching. It is not currently evidenced as actively exploited, but Vim is widely installed and used by technical staff. Prioritize high-value admin and developer environments. Mitigation focus: Upgrade Vim to version 9.2.0077 or later.; Prioritize developer, administrator, and shared multi-user systems.; Avoid recovering Vim swap files from untrusted sources..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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ATT&CK lookup starting points
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CWE-122: Exact CWE lookup
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Open ATT&CK lookupCWE-20: Exact CWE lookup
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Open ATT&CK lookupCVE-2026-28421 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L1.83.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.3MediumVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/vim/vim/security/advisories/GHSA-r2gw-2x48-jj5pCVE reference · x_refsource_CONFIRM
- https://github.com/vim/vim/commit/65c1a143c331c886dc28CVE reference · x_refsource_MISC
- https://github.com/vim/vim/releases/tag/v9.2.0077CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Heap-based Buffer Overflow
Heap-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.