CyberSecBulletin
CVE-2026-92864NVD status: Deferred

Hitachi Dynamic Link Manager for AIX: UNIX Symbolic Link (Symlink) Following

Published Updated By the CyberSecBulletin desk

CVE-2026-92864 is a high-severity UNIX symbolic link (symlink) following vulnerability in Hitachi Dynamic Link Manager for AIX from Hitachi, with a CVSS 3.1 base score of 7.3 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, but only if a user takes part, for example by opening a link or file. The record lists version 9.0.4-01 as the first without the flaw, so updating Hitachi Dynamic Link Manager for AIX to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.13% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Hitachi Dynamic Link Manager for AIX to 9.0.4-01 or a later version.
  2. Update Hitachi Dynamic Link Manager EX for AIX to 9.0.4-01 or a later version.
  3. Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.

Affected products and versions

VendorProductAffected versionsFixed in
HitachiHitachi Dynamic Link Manager for AIX7.4.1-00 up to, but not including, 9.0.4-019.0.4-01
HitachiHitachi Dynamic Link Manager EX for AIX7.4.1-00 up to, but not including, 9.0.4-019.0.4-01

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
LocalThe attacker needs local access or must trick a user into running something.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
LowA basic user account is enough.
User interaction
RequiredA user must take an action such as opening a file or link.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H. Scored by CNA (hitachi.co.jp).

Official description

Insecure Temporary File Vulnerability in Hitachi Dynamic Link Manager for AIX (for markets outside Japan) and Hitachi Dynamic Link Manager EX for AIX (for the Japanese market). This issue affects Hitachi Dynamic Link Manager for AIX: from 7.4.1-00 before 9.0.4-01; Hitachi Dynamic Link Manager EX for AIX: from 7.4.1-00 before 9.0.4-01.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: UNIX Symbolic Link (Symlink) Following

The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files.

How developers prevent this class of flaw

  • Symbolic link attacks often occur when a program creates a tmp directory that stores files/links. Access to the directory should be restricted to the program as to prevent attackers from manipulating the files.
  • Follow the principle of least privilege when assigning access rights to entities in a software system. Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

More UNIX Symbolic Link (Symlink) Following vulnerabilities (CWE-61)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).

References

Other vulnerabilities in Hitachi Dynamic Link Manager for AIX

All Hitachi Dynamic Link Manager for AIX vulnerabilities

Recent UNIX Symbolic Link (Symlink) Following vulnerabilities

Spotted an error? Tell us.