CVE-2023-0950 | Array Index UnderFlow in Calc Formula Parsing

Improper Validation of Array Index vulnerability in the spreadsheet component of The Document Foundation LibreOffice allows an attacker to craft a spreadsheet document that will cause an array index underflow when loaded. In the affected versions of LibreOffice certain malformed spreadsheet formulas, such as AGGREGATE, could be created with less parameters passed to the formula interpreter than it expected, leading to an array index underflow, in which case there is a risk that arbitrary code could be executed. This issue affects: The Document Foundation LibreOffice 7.4 versions prior to 7.4.6; 7.5 versions prior to 7.5.1.

Published: 2023-05-25 Last update: 2025-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-0950 is rated Low Risk (37.6/100): CVSS High severity, with low exploitation likelihood (EPSS 0.07%). 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-2023-0950

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 2025-03-30 0.18% 0.07% -0.11%
2 2025-03-29 0.09% 0.18% +0.09%
3 2023-06-02 — 0.09% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-0950

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
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]
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 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2023-0950

OS Trackers for CVE-2023-0950

vendor priority summary link
debian not yet assigned CVE-2023-0950 not yet assigned priority: Debian including 1 source packages (libreoffice), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2023-0950
gentoo high CVE-2023-0950: 1 GLSA(s) (202311-15), 2 atom(s) (app-office/libreoffice, app-office/libreoffice-bin); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2023-0950
redhat medium — https://access.redhat.com/security/cve/CVE-2023-0950
suse high CVE-2023-0950 severity important: SUSE including 235 source package names (2.0.2-4.2.20:libxmlsec1-1-1.2.37-150400.14.3.4, 2.0.2-4.2.20:libxmlsec1-openssl1-1.2.37-150400.14.3.4, …), 1052 product×package rows across 57 product lines (Container suse/sle-micro-rancher/5.3, Container suse/sle-micro-rancher/5.4, … (57 product lines)): Fixed 1052. https://www.suse.com/security/cve/CVE-2023-0950/
ubuntu medium CVE-2023-0950 medium priority: Ubuntu including 1 source packages (libreoffice), 8 status rows across 8 suites (bionic, focal, jammy, kinetic, lunar, trusty, upstream, xenial): ignored 3, released 3, needs-triage 1, not-affected 1. https://ubuntu.com/security/CVE-2023-0950

Affected software / configurations for CVE-2023-0950

Vendor Product Version Raw CPE
libreoffice libreoffice >= 7.4.0, < 7.4.6 cpe:2.3:a:libreoffice:libreoffice:*:*:*:*:*:*:*:*
libreoffice libreoffice >= 7.5.0, < 7.5.2 cpe:2.3:a:libreoffice:libreoffice:*:*:*:*:*:*:*:*
debian debian_linux 10.0 cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

References for CVE-2023-0950

cvelogic Threat Intelligence