ZDI-26-402: (0Day) Glarysoft Glary Utilities Link Following Local Privilege Escalation Vulnerability
This vulnerability allows local attackers to escalate privileges on affected installations of Glarysoft Glary Utilities. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.3. The following CVEs are assigned: CVE-2026-15684.
AI Analysis
Technical Summary
CVE-2026-15684 is a local privilege escalation vulnerability in Glarysoft Glary Utilities. The flaw resides in the Disk Clean feature, where an attacker who can run low-privileged code can create a junction to abuse the service into deleting arbitrary files. This can be leveraged to escalate privileges and execute code with SYSTEM-level rights. The vulnerability was reported to the vendor in May 2025, with public disclosure coordinated in July 2026. No patch or remediation has been publicly confirmed. The vulnerability carries a CVSS v3.1 base score of 7.3 (AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H).
Potential Impact
Successful exploitation allows a local attacker with low privileges to escalate to SYSTEM privileges and execute arbitrary code, potentially leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability at a high level.
Mitigation Recommendations
No official patch or fix has been confirmed by the vendor. The advisory recommends restricting interaction with Glarysoft Glary Utilities to mitigate risk. Users should avoid running or interacting with the Disk Clean functionality of the product until a vendor-provided fix is available. Monitor the vendor advisory for updates on remediation.
ZDI-26-402: (0Day) Glarysoft Glary Utilities Link Following Local Privilege Escalation Vulnerability
Description
This vulnerability allows local attackers to escalate privileges on affected installations of Glarysoft Glary Utilities. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.3. The following CVEs are assigned: CVE-2026-15684.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-15684 is a local privilege escalation vulnerability in Glarysoft Glary Utilities. The flaw resides in the Disk Clean feature, where an attacker who can run low-privileged code can create a junction to abuse the service into deleting arbitrary files. This can be leveraged to escalate privileges and execute code with SYSTEM-level rights. The vulnerability was reported to the vendor in May 2025, with public disclosure coordinated in July 2026. No patch or remediation has been publicly confirmed. The vulnerability carries a CVSS v3.1 base score of 7.3 (AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H).
Potential Impact
Successful exploitation allows a local attacker with low privileges to escalate to SYSTEM privileges and execute arbitrary code, potentially leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability at a high level.
Mitigation Recommendations
No official patch or fix has been confirmed by the vendor. The advisory recommends restricting interaction with Glarysoft Glary Utilities to mitigate risk. Users should avoid running or interacting with the Disk Clean functionality of the product until a vendor-provided fix is available. Monitor the vendor advisory for updates on remediation.
Technical Details
- Article Source
- {"url":"http://www.zerodayinitiative.com/advisories/ZDI-26-402/","fetched":true,"fetchedAt":"2026-07-09T11:08:26.718Z","wordCount":246}
- Classification
- {"confidence":0.95,"severitySource":"cvss-text","classifier":"rss-v2"}
Threat ID: 6a4f818768715ace4335a9b0
Added to database: 07/09/2026, 11:09:59 UTC
Last enriched: 07/31/2026, 01:42:11 UTC
Last updated: 08/23/2026, 07:26:23 UTC
Views: 126
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.