CVE-2026-28420Disclosure(vim / vim)

LOWCVSS 4.4 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

Patch vim vim systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD 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.

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0.5/ 10 priority

Sources & remediation

Patch / fix

Other references

https://github.com/vim/vim/releases/tag/v9.2.0076

Weakness type (CWE)

CWE-122CWE-125

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

Threat summary

Patch or workaround signal is available
3 mentions across 2 observed days
Momentum state: stable

What's happening

Patch or workaround mentioned in 1 signal
Technical details provided in 3 signals
Disclosure: 2 classified signals
Peaked 1d ago at 2 mentions (2026-02-28); latest day: 1
3 total mentions across 2 days

Affected systems

Vendors

vim

Products

vim

Deep dive

Activity timeline3 mentions / 2d

Signal classification2 categories

Disclosure

266.7%

Patch

133.3%

Referenced assets3 URLs

By indicator

Classification over time

Date	Total	Labels

2026-02-28	2	Disclosure2
2026-03-08	1	Patch1

Full discourse3 posts

Open Source Security mailing list@oss_security216d
Patch
6 CVEs fixed in Vim https://www.openwall.com/lists/oss-security/2026/02/27/ CVE-2026-28417: OS Command Injection in netrw CVE-2026-28418,CVE-2026-28419: Heap Out-of-bounds Reads in Emacs tags parsing CVE-2026-28420: Heap-based Buffer Overflow and OOB Read in :terminal + next tweet
Post summary
Six CVEs affecting Vim have been fixed, with technical details provided for each, but no proof‑of‑concept or exploitation evidence is mentioned.
12053740
4.4K followersView on X
CVE@CVEnew224d
Disclosure
CVE-2026-28420 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 emula… https://www.cve.org/CVERecord?id=CVE-2026-28420
Post summary
The CVE details a heap‑based buffer overflow and out‑of‑bounds read in Vim before version 9.2.0076, with no mention of PoC, exploit, or patch.
00000139
56.6K followersView on X
Vulmon Vulnerability Feed@VulmonFeeds225d
Disclosure
CVE-2026-28420 Heap-Based Buffer Overflow in Vim Terminal Emulator Before 9.2.0076 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-28420
Post summary
The text announces CVE-2026-28420, detailing a heap-based buffer overflow in Vim's terminal emulator prior to version 9.2.0076, without providing any PoC, exploit, or patch information.
0000056
4.0K followersView on X

CPE platform detail1 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

1 of 1 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	vim	vim	-	-	-

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