MEDIUM
CVE-2026-28420
CWE-122Published: February 27, 2026· Updated: Mar 4, 2026
4.4
CVSS v3.1
EPSS:0.00%probability of exploitation in 30 daysPercentile:0.2th
Official Description
Vim is an open source, command line text editor. Prior to version 9.2.0076, a heap-based buffer overflow WRITE and an out-of-bounds READ exist in Vim's terminal emulator when processing maximum combining characters from Unicode supplementary planes. Version 9.2.0076 fixes the issue.
Technical Analysis
CVE-2026-28420 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityLow
AvailabilityLow
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
Affected Vendors & Products
vim1 product
vim
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories
All References (4)
→
https://github.com/vim/vim/security/advisories/GHSA-rvj2-jrf9-2phgPatch · Vendor Advisory
→
http://www.openwall.com/lists/oss-security/2026/02/27/9Mailing List · Patch · Third Party Advisory
Quick Facts
CVE IDCVE-2026-28420
CVSS Score4.4 / 10
SeverityMEDIUM
WeaknessCWE-122
CISA KEVNo
EPSS (30d)0.00%
Affected1 vendor
PublishedFeb 27, 2026
Related CVEs (CWE-122)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-28420 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.