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Vulnerability Details :

CVE-2026-25704

Summary
Assigner-suse
Assigner Org ID-404e59f5-483d-4b8a-8e7a-e67604dd8afb
Published At-30 Mar, 2026 | 07:44
Updated At-16 Apr, 2026 | 16:32
Rejected At-
Credits

Incomplete privilege drop for com.system76.CosmicGreeter.GetUserData

A Privilege Dropping / Lowering Errors/Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in  cosmic-greeter can allow an attacker to regain privileges that should have been dropped and abuse them in the racy checking logic. This issue affects cosmic-greeter before https://github.Com/pop-os/cosmic-greeter/pull/426.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:suse
Assigner Org ID:404e59f5-483d-4b8a-8e7a-e67604dd8afb
Published At:30 Mar, 2026 | 07:44
Updated At:16 Apr, 2026 | 16:32
Rejected At:
▼CVE Numbering Authority (CNA)
Incomplete privilege drop for com.system76.CosmicGreeter.GetUserData

A Privilege Dropping / Lowering Errors/Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in  cosmic-greeter can allow an attacker to regain privileges that should have been dropped and abuse them in the racy checking logic. This issue affects cosmic-greeter before https://github.Com/pop-os/cosmic-greeter/pull/426.

Affected Products
Vendor
pop-os
Product
cosmic-greeter
Package Name
cosmic-greeter
Default Status
unaffected
Versions
Affected
  • From ? before https://github.com/pop-os/cosmic-greeter/pull/426 (git)
Problem Types
TypeCWE IDDescription
CWECWE-271CWE-271: Privilege Dropping / Lowering Errors
CWECWE-367CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition
Type: CWE
CWE ID: CWE-271
Description: CWE-271: Privilege Dropping / Lowering Errors
Type: CWE
CWE ID: CWE-367
Description: CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition
Metrics
VersionBase scoreBase severityVector
4.05.8MEDIUM
CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
Version: 4.0
Base score: 5.8
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
finder
Matthias Gerstner of SUSE
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-25704
N/A
Hyperlink: https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-25704
Resource: N/A
▼Authorized Data Publishers (ADP)
1. CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
2. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
http://www.openwall.com/lists/oss-security/2026/04/16/3
N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2026/04/16/3
Resource: N/A
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:meissner@suse.de
Published At:30 Mar, 2026 | 08:16
Updated At:16 Apr, 2026 | 17:16

A Privilege Dropping / Lowering Errors/Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in  cosmic-greeter can allow an attacker to regain privileges that should have been dropped and abuse them in the racy checking logic. This issue affects cosmic-greeter before https://github.Com/pop-os/cosmic-greeter/pull/426.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.05.8MEDIUM
CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Secondary
Version: 4.0
Base score: 5.8
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-271Secondarymeissner@suse.de
CWE-367Secondarymeissner@suse.de
CWE ID: CWE-271
Type: Secondary
Source: meissner@suse.de
CWE ID: CWE-367
Type: Secondary
Source: meissner@suse.de
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-25704meissner@suse.de
N/A
http://www.openwall.com/lists/oss-security/2026/04/16/3af854a3a-2127-422b-91ae-364da2661108
N/A
Hyperlink: https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-25704
Source: meissner@suse.de
Resource: N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2026/04/16/3
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A

Change History

0
Information is not available yet

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