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CVE-2025-64403

27
FAUCET Score

CVE-2025-64403 is a missing authorization vulnerability in Apache OpenOffice Calc versions through 4.1.15. An attacker could craft a malicious spreadsheet document that would automatically load external data sources without user prompt, potentially leading to information disclosure or other impacts. This vulnerability has a high CVSS score of 8.1, indicating a network-based attack with low complexity and high impact on confidentiality and integrity, requiring user interaction. Currently, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.1.16CPE matchmatch criteria
cpe:2.3:a:apache:openoffice:*:*:*:*:*:*:*:*
>= 0, <= 4.1.15CPE match
cpe:2.3:a:apache:openoffice:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.29%
Probability of exploitation in next 30 days
EPSS Percentile
67.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0129 is in the 66th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

denopatch availablevia llm_extracted
Fixed in: 4.1.16
View patch
libreofficepatch availablevia llm_extracted
Fixed in: 4.1.16
View patch
nessuspatch availablevia llm_extracted
Fixed in: 4.1.16
postgresqlpatch availablevia llm_extracted
Fixed in: 4.1.16
View patch

Vendor Advisories (4)

denollm-deno-7c5e07f436f909e7

Remote documents loaded without prompt via "external data sources" in Calc.

postgresqlllm-postgresql-825a1ab7b8c1091f

Remote documents loaded without prompt via "external data sources" in Calc.

libreofficellm-libreoffice-6491f1fafe33eb84

Remote documents loaded without prompt via "external data sources" in Calc.

nessusllm-nessus-97ec17c071de1381

Remote documents loaded without prompt via "external data sources" in Calc.

References

openwall.com / lists/oss-security/2025/11/11/6
Mailing ListThird Party Advisory
lists.apache.org / thread/t7c6jhvdb00xtgd9vvn7h5sq9f4h5trt
Mailing ListVendor Advisory
openoffice.org / security/cves/CVE-2025-64403.html
Vendor Advisory