CVE-2022-26307

Weak Master Keys

HIGH
8.8
CVSS Score
Published: July 25, 2022 at 12:00 AM UTC
Updated: June 17, 2026 at 04:34 AM UTC
3 products affected across 3 vendorsDebian LinuxLibreofficeLibreOffice

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Severity
HIGH8.8
Exploit prediction
EPSS 2%

Description

LibreOffice supports the storage of passwords for web connections in the user’s configuration database. The stored passwords are encrypted with a single master key provided by the user. A flaw in LibreOffice existed where master key was poorly encoded resulting in weakening its entropy from 128 to 43 bits making the stored passwords vulerable to a brute force attack if an attacker has access to the users stored config. This issue affects: The Document Foundation LibreOffice 7.2 versions prior to 7.2.7; 7.3 versions prior to 7.3.3.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

7.2.0 ≤ v < 7.2.77.3.0 ≤ v < 7.3.3
Affected range stops below 7.2.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.3.3, so it looks safe — our inference, not a vendor statement
7.2 ≤ v < 7.2.77.3 ≤ v < 7.3.37.27.3
Affected range stops below 7.2.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.3.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-326NVD-CWE-Other

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