CVE-2022-3520 | Heap-based Buffer Overflow in vim/vim

Exp

Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.0765.

Published: 2022-12-02 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-3520 is rated High Exploit Risk (75.5/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.00%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2022-3520

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2022-3520

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.09% 1.00% +0.91%
2 2025-11-21 0.32% 0.09% -0.23%
3 2025-11-18 — 0.32% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-3520

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
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:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
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.
 3.9 5.9 [email protected]
7.8 3.0 HIGH
CVSS:3.0/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]

Weakness enumeration for CVE-2022-3520

OS Trackers for CVE-2022-3520

vendor priority summary link
alpine critical CVE-2022-3520: 1 source package rows (vim); 130 state rows across 5 repos (3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 0, open 130. https://security.alpinelinux.org/vuln/CVE-2022-3520
debian unimportant CVE-2022-3520 unimportant priority: Debian including 1 source packages (vim), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1. https://security-tracker.debian.org/tracker/CVE-2022-3520
gentoo low CVE-2022-3520: 1 GLSA(s) (202305-16), 3 atom(s) (app-editors/gvim, app-editors/vim, app-editors/vim-core); latest impact low. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2022-3520
redhat low — https://access.redhat.com/security/cve/CVE-2022-3520
suse high CVE-2022-3520 severity important: SUSE including 276 source package names (11.1-2.2.335:vim-9.0.1040-150000.5.31.1, 11.1-2.2.335:vim-data-common-9.0.1040-150000.5.31.1, …), 696 product×package rows across 190 product lines (Container ses/7.1/ceph/haproxy, Container suse/sle-micro-rancher/5.2, … (190 product lines)): Fixed 566, Known Affected 124, Known Not Affected 6. https://www.suse.com/security/cve/CVE-2022-3520/
ubuntu low CVE-2022-3520 low priority: Ubuntu including 1 source packages (vim), 8 status rows across 8 suites (bionic, focal, jammy, kinetic, lunar, trusty, upstream, xenial): not-affected 4, released 3, ignored 1. https://ubuntu.com/security/CVE-2022-3520

Affected software / configurations for CVE-2022-3520

Vendor Product Version Raw CPE
vim vim < 9.0.0765 cpe:2.3:a:vim:vim:*:*:*:*:*:*:*:*

References for CVE-2022-3520

cvelogic Threat Intelligence