CVE-2026-22767
Published: 01 April 2026
Summary
CVE-2026-22767 is a high-severity UNIX Symbolic Link (Symlink) Following (CWE-61) vulnerability in Dell Appsync. Its CVSS base score is 7.3 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 3.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-2 (Flaw Remediation) and AC-6 (Least Privilege).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Timely flaw remediation directly applies the vendor patch that fixes the symlink following vulnerability in Dell AppSync 4.6.0.
Information input validation ensures file paths are properly checked to reject or sanitize symlinks, preventing symlink-based tampering.
Least privilege limits the privileges of low-privileged local attackers and AppSync processes, reducing the impact of symlink exploitation on information integrity and availability.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Symlink following in a local UNIX application directly enables arbitrary file tampering by low-privileged users, mapping to local privilege escalation (T1068) and Linux file/directory permission abuse (T1222.002).
NVD Description
Dell AppSync, version(s) 4.6.0, contain(s) an UNIX Symbolic Link (Symlink) Following vulnerability. A low privileged attacker with local access could potentially exploit this vulnerability, leading to Information tampering.
Deeper analysisAI
CVE-2026-22767 is a UNIX Symbolic Link (Symlink) Following vulnerability (CWE-61) affecting Dell AppSync version 4.6.0. Published on 2026-04-01T13:16:33.150, it carries a CVSS v3.1 base score of 7.3 (AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H), indicating high severity due to significant impacts on integrity and availability.
A low-privileged attacker with local access can exploit this vulnerability to tamper with information. The attack requires low privileges and local access but no user interaction, with unchanged scope, resulting in low confidentiality impact alongside high integrity and availability impacts.
Dell's security advisory DSA-2026-163 provides a security update for Dell AppSync vulnerabilities, including this issue, as detailed at https://www.dell.com/support/kbdoc/en-us/000446965/dsa-2026-163-security-update-for-dell-appsync-vulnerabilities. Practitioners should apply the patch to mitigate the risk.
Details
- CWE(s)