CVE-2023-37378

Nullsoft Scriptable Install System (NSIS) before 3.09 mishandles access control for an uninstaller directory.

Published: 2023-07-03 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-37378 is rated Low Risk (39.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.30%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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

Exploit prediction scoring system (EPSS) score for CVE-2023-37378

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 2026-06-03 0.37% 0.30% -0.07%
2 2026-04-29 0.27% 0.37% +0.10%
3 2025-11-21 — 0.27% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-37378

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N 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:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 [email protected]

Weakness enumeration for CVE-2023-37378

OS Trackers for CVE-2023-37378

vendor priority summary link
debian not yet assigned CVE-2023-37378 not yet assigned priority: Debian including 1 source packages (nsis), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2023-37378
ubuntu medium CVE-2023-37378 medium priority: Ubuntu including 1 source packages (nsis), 13 status rows across 13 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): needs-triage 8, ignored 5. https://ubuntu.com/security/CVE-2023-37378

Affected software / configurations for CVE-2023-37378

Vendor Product Version Raw CPE
nullsoft nullsoft_scriptable_install_system <= 3.09 cpe:2.3:a:nullsoft:nullsoft_scriptable_install_system:*:*:*:*:*:*:*:*

References for CVE-2023-37378

URL Tags
http://sf.net/p/nsis/bugs/1296 Issue Tracking Permissions Required
https://github.com/kichik/nsis/commit/281e2851fe669d10e0650fc89d0e7fb74a598967 Patch
https://github.com/kichik/nsis/commit/409b5841479c44fbf33a6ba97c1146e46f965467 Patch
https://github.com/kichik/nsis/commit/c40cf78994e74a1a3a381a850c996b251e3277c0 Patch
https://lists.debian.org/debian-lts-announce/2023/07/msg00005.html Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A65FBUMHLZ7GBV3VDKUB5EK3A7X2UUWK/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OZPAAU57IA3NP6UOUXNBUQBAYK3JB2IM/
https://nsis.sourceforge.io/Docs/AppendixF.html#v3.09 Release Notes
https://sourceforge.net/p/nsis/news/2023/07/nsis-309-released/ Release Notes
https://lists.debian.org/debian-lts-announce/2024/09/msg00013.html
cvelogic Threat Intelligence