VulnSocial

CVE-2026-25704General

LOWCVSS 5.8 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

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.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-271CWE-367

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Threat summary

  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 2 signals
  • General: 1 classified signal
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-03-30); latest day: 1
  • 2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-03-30: 1Mentions · 2026-04-19: 1Technical Details · 2026-03-30: 1Technical Details · 2026-04-19: 103-3004-19
Signal classification2 categories
General
150.0%
Disclosure
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-03-301
General1
2026-04-191
Disclosure1
Full discourse2 posts
  • Open Source Security mailing list@oss_security
    Disclosure

    CVE-2026-25704: cosmic-greeter: Unsafe File System Operations in User Home Directories https://www.openwall.com/lists/oss-security/2026/04/16/3 Cosmic is a modern Linux desktop environment implemented in Rust. Its component cosmic-greeter contains a D-Bus service [...] leading to potential privilege escalation.

    Post summary

    The post announces a new vulnerability in the cosmic-greeter D-Bus service of Cosmic, highlighting unsafe file system operations that could lead to privilege escalation, with no mention of PoC, exploit code, active attacks, or fixes.

    00030385
    4.7K followersView on X
  • CVE@CVEnew
    General

    CVE-2026-25704 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 t… https://www.cve.org/CVERecord?id=CVE-2026-25704

    Post summary

    The text gives a short technical description of a TOCTOU race condition that could enable privilege regaining, but offers no evidence of exploitation, mitigation, or a PoC.

    0001093
    56.8K followersView on X

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