Security readout for executives and security teams
Plain-English summary
A malicious file can cause vulnerable Vim versions to run code as soon as the file is opened, including with default settings. Successful exploitation could expose sensitive data, alter files, or disrupt the workstation under the user’s permissions. The source bundle identifies Vim versions before 9.2.0272 as vulnerable.
Executive priority
Treat as an urgent workstation and engineering-environment remediation. Prioritize privileged administrators, developers, production operators, and build systems because successful code execution inherits the user’s access. Confirm vendor-fixed packages promptly; current evidence does not show active exploitation.
Technical view
Vim before 9.2.0272 improperly processes a crafted %{expr} expression in tabpanel because the relevant option lacks P_MLE protection. This permits expression injection leading to code execution. The supplied CVSS 3.1 score is 9.2, with high confidentiality and integrity impact and changed scope.
Likely exposure
Developer workstations, administrative systems, build environments, and servers are exposed where Vim before 9.2.0272 may open attacker-controlled or untrusted files. Actual exposure depends on installed package versions and whether downstream distributions backported the fix.
Exploitation context
The flaw requires a crafted file to reach and be opened by vulnerable Vim. The bundle states execution occurs immediately in the default configuration. CVE is not listed as KEV in the supplied data, and the sources provided do not establish active exploitation.
Researcher notes
The reported weakness combines command and expression injection classifications, CWE-78 and CWE-917. Scope assessment should distinguish upstream versions from distribution packages carrying backports. The bundle’s affected-product metadata is sparse and internally awkward, so use the explicit “before 9.2.0272” statement and vendor advisory when validating exposure.
Mitigation direction
- Upgrade Vim to 9.2.0272 or a later vendor-supported fixed build.
- Check distribution advisories for backported fixes before judging package versions.
- Restrict opening untrusted files with vulnerable Vim until remediation is complete.
- Prioritize systems where Vim users hold administrative or sensitive-data access.
Validation and detection
- Inventory Vim versions across workstations, servers, containers, and build environments.
- Confirm installed builds include release 9.2.0272 or commit 664701eb7576.
- Review distribution security notices for fixed package revisions or backports.
- Identify workflows where users receive or open files from untrusted sources.
- After updating, verify the effective Vim binary and package version.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCWE-917: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-34714 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
2 official scoresWe 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:N/S:C/C:H/I:H/A:L2.56mitreCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H1.86redhat-SADPVulnerability scoring details
Base CVSS 3.1 score
9.2CriticalVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L
Base CVSS 3.1 score
8.6HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- ADP timelineredhat-SADP
Made public.
- CVE publishedCVE Program
The CVE record was published.
- ADP timelineredhat-SADP
Reported to Red Hat.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
- 2026-03-30T19:01:54.837Z: Reported to Red Hat.
- 2026-03-30T18:27:55.752Z: Made public.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.openwall.com/lists/oss-security/2026/03/30/3CVE reference, mitre
- https://github.com/vim/vim/security/advisories/GHSA-2gmj-rpqf-pxvhCVE reference, mitre
- https://github.com/vim/vim/commit/664701eb7576edb7c7c7d9f2d600815ec1f43459CVE reference, mitre
- https://github.com/vim/vim/releases/tag/v9.2.0272CVE reference, mitre
- https://access.redhat.com/security/cve/CVE-2026-34714CVE reference, redhat-SADP · vdb-entry, x_refsource_REDHAT
- RHBZ#2453139CVE reference, redhat-SADP · issue-tracking, x_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34714.jsonCVE reference, redhat-SADP · x_sadp-csaf-vex
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.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')
Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.