Security readout for executives and security teams
CVE-2026-25704 is a local privilege-handling flaw in pop-os cosmic-greeter. A logged-in attacker may regain privileges that should have been dropped by winning a race condition. It is not described as remotely exploitable, and public sources do not show active exploitation. Exposure is limited to systems running vulnerable cosmic-greeter builds before the fix referenced by pop-os/cosmic-greeter PR 426. The source bundle does not enumerate exact affected versions or distributions beyond the package/product name. Treat as a normal-priority desktop patching item, elevated for shared or untrusted-user environments. It is not currently supported as an internet-wide emergency, but privilege-boundary bugs can become important on endpoints with multiple users. Mitigation focus: Check Pop!_OS, SUSE, and distribution advisories for fixed cosmic-greeter packages.; Update cosmic-greeter to a build containing the PR 426 fix when available.; Limit local user access on affected desktop systems until patched..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CWE-271: Exact CWE lookup
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Open ATT&CK lookupCWE-367: Exact CWE lookup
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Open ATT&CK lookupCVE-2026-25704 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.8 (4.0)
- Known Exploited
- No
- Published
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
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
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——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
5.8MediumVector: 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
Source materials
- CVE List V5 sourceCVE List V5
- https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-25704CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Privilege Dropping / Lowering Errors
Privilege Dropping / Lowering Errors represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Time-of-check Time-of-use (TOCTOU) Race Condition
Time-of-check Time-of-use (TOCTOU) Race Condition represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.