CVE-2025-64405: Apache OpenOffice documents can contain links

Q: How do I fix CVE-2025-64405?

openoffice: upgrade to 4.1.16. Exact commands for each OS are on this page.

Q: Is CVE-2025-64405 being exploited?

CVE-2025-64405 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-64405 affect?

CVE-2025-64405 affects openoffice. Severity is high (CVSS 7.5). Apache OpenOffice documents can contain links. A missing Authorization vulnerability in Apache OpenOffice allowed an attacker to craft a document that would cause external links to be loaded without prompt. In the affected versions of Apac

Q: How urgent is CVE-2025-64405?

Priority 55/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

This month

HIGH 7.5REMOTEWATCHLISTUPGRADE

CVE-2025-64405 is a high-severity flaw (CVSS 7.5) affecting openoffice. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Apache OpenOffice documents can contain links. A missing Authorization vulnerability in Apache OpenOffice allowed an attacker to craft a document that would cause external links to be loaded without prompt. In the affected versions of Apache OpenOffice, Calc spreadsheet containing DDE links to external files would load the contents of those files without prompting the user for permission to do so. This issue affects Apache OpenOffice: through

Why this priority

High severity
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.4% (top 27%)
CISA exploited list	No
Weakness	CWE-862
Published	2025-11-12
Last modified	2026-10-18

Publisher (CNA): Apache Software Foundation · Vendor: apache

Last updated 2026-10-18 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-11-12 09:15 UTCPublished CVE record published
2026-10-18 20:10 UTCUpdated Record last modified

apache openoffice UPGRADE

Affected: < 4.1.16

Fixed in: 4.1.16

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy openoffice || rpm -q openoffice || openoffice --version

2. UPGRADE to 4.1.16 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade openoffice

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade openoffice

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora ELN · openjpeg · FIXED · 2.5.4-5.eln159 · FEDORA-2026-1a5f60f401 · source

sudo dnf upgrade --advisory=FEDORA-2026-1a5f60f401

Fedora 46 · trustedqsl · FIXED · 2.8.7-1.fc46 · FEDORA-2026-6b1bc90ebc · source

sudo dnf upgrade --advisory=FEDORA-2026-6b1bc90ebc

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: www.openoffice.org/security/cves/CVE-2025-64405.html

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-64405?

openoffice: upgrade to 4.1.16. Exact commands for each OS are on this page.

Is CVE-2025-64405 being exploited?

CVE-2025-64405 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-64405 affect?

CVE-2025-64405 affects openoffice. Severity is high (CVSS 7.5). Apache OpenOffice documents can contain links. A missing Authorization vulnerability in Apache OpenOffice allowed an attacker to craft a document that would cause external links to be loaded without prompt. In the affected versions of Apac

How urgent is CVE-2025-64405?

Priority 55/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

Related CVEs

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CVE-2026-59263 MEDIUM 5.5 UPGRADE A manipulated document opened in Apache OpenOffice 4.1.16 or earlier may allow substituted content to be displ
CVE-2026-90631 LOW 3.3 UPGRADE Apache OpenOffice documents can contain links
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References

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