CVE-2026-39881 [Medium] | Code Injection in Vim

Vim is an open source, command line text editor. Prior to 9.2.0316, a command injection vulnerability in Vim's netbeans interface allows a malicious netbeans server to execute arbitrary Ex commands when Vim connects to it, via unsanitized strings in the defineAnnoType and specialKeys protocol messages. This vulnerability is fixed in 9.2.0316.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-04-23	0.17%	0.03%	-0.14%
2	2026-04-12	0.14%	0.17%	+0.03%
3	2026-04-09	—	0.14%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-04-23

0.17%

0.03%

-0.14%

2026-04-12

0.14%

0.17%

+0.03%

2026-04-09

—

0.14%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
5.0	3.1	MEDIUM	`CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:H/A:N` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:H) Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:R) A real person has to do something—click, install, enable—otherwise it doesn’t land. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:L) Some sensitive info could get out, but not a total data dump. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:N) Service keeps running; no real outage angle.	0.8	4.2	[email protected]
7.8	3.1	HIGH	`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:R) A real person has to do something—click, install, enable—otherwise it doesn’t land. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.8	5.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

5.0

3.1

MEDIUM

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:H/A:N Click to expand

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H): Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L): A normal user session is enough; they don’t have to be admin.
User interaction (UI:R): A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L): Some sensitive info could get out, but not a total data dump.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N): Service keeps running; no real outage angle.

0.8

4.2

[email protected]

7.8

3.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R): A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

1.8

5.9

[email protected]

OS Trackers for CVE-2026-39881

vendor	priority	summary	link
`alpine`	—	CVE-2026-39881: 1 source package rows (vim); 2 state rows across 2 repos (3.23-main, edge-community); fixed 2, open 0.	https://security.alpinelinux.org/vuln/CVE-2026-39881
`debian`	not yet assigned	CVE-2026-39881 not yet assigned priority: Debian including 1 source packages (vim), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 3, resolved 2.	https://security-tracker.debian.org/tracker/CVE-2026-39881
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2026-39881
`suse`	medium	—	https://www.suse.com/security/cve/CVE-2026-39881/
`ubuntu`	medium	CVE-2026-39881 medium priority: Ubuntu including 1 source packages (vim), 9 status rows across 9 suites (bionic, focal, jammy, noble, questing, resolute, trusty, upstream, xenial): released 8, not-affected 1.	https://ubuntu.com/security/CVE-2026-39881

Affected software / configurations for CVE-2026-39881

Vendor	Product	Version	Raw CPE
vim	vim	< 9.2.0316	cpe:2.3:a:vim:vim::::::::

References for CVE-2026-39881

URL	Tags
https://github.com/vim/vim/commit/7ab76a86048ed492374ac6b19	Patch
https://github.com/vim/vim/releases/tag/v9.2.0316	Release Notes
https://github.com/vim/vim/security/advisories/GHSA-mr87-rhgv-7pw6	Vendor Advisory

URL

CVE-2026-39881 | Vim Ex command injection in Vims NetBeans integration

Exploit prediction scoring system (EPSS) score for CVE-2026-39881

Common vulnerability scoring system (CVSS) metrics for CVE-2026-39881

Weakness enumeration for CVE-2026-39881

OS Trackers for CVE-2026-39881

Affected software / configurations for CVE-2026-39881

References for CVE-2026-39881