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VulnerabilityPublished Updated

CVE-2024-31498: Yubico ykman-gui · Improper Privilege Management

Source CVE Database V5

0

Not known to be exploited · CVSS 8.8 High · fixed in 1.2.6 : patch affected systems soon.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 46% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.2.6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 4 Apr 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

AI-suggested

Organizations should immediately upgrade YubiKey Manager GUI to version 1.2.6 or later, where this privilege escalation vulnerability is addressed. Until patching is possible, restrict access to systems running vulnerable versions to trusted users only and monitor for unusual privilege escalation attempts. Implement application whitelisting and endpoint detection and response (EDR) solutions to detect anomalous process launches with elevated privileges. Review and enforce least privilege principles to limit the number of users with administrative rights. Additionally, configure default browsers to Microsoft Edge where feasible, as the vulnerability specifically arises when Edge is not used. Conduct regular audits of privilege assignments and monitor logs for suspicious activity related to YubiKey Manager GUI or browser processes. Educate users about the risks of running untrusted applications with elevated privileges and maintain up-to-date antivirus and endpoint protection.

Description

Yubico ykman-gui (aka YubiKey Manager GUI) before 1.2.6 on Windows, when Edge is not used, allows privilege escalation because browser windows can open as Administrator.

References

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