CVE-2026-91763— Insecure Temporary File Vulnerability in Hitachi Dynamic Link Manager for Linux

Quick assessment

Affected

Hitachi Hitachi Dynamic Link Manager for Linux

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

日立 Linux 动态链接管理器（Hitachi Dynamic Link Manager for Linux）存在 UNIX 符号链接（Symlink）跟随漏洞。该问题影响从 8.6.2.-00 版本起至 9.0.5-00 版本之前的 Hitachi Dynamic Link Manager for Linux。

CVSS 8.2 · High Updated Nov 10, 2026

Possible ATT&CK Techniques 1 AI

T1565.002 · Transmitted Data Manipulation

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Vulnerability Information

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Vulnerability Title

Insecure Temporary File Vulnerability in Hitachi Dynamic Link Manager for Linux

Source: CVE Program / CVE List V5

Vulnerability Description

UNIX Symbolic Link (Symlink) Following Vulnerability in Hitachi Dynamic Link Manager for Linux. This issue affects Hitachi Dynamic Link Manager for Linux: from 8.6.2.-00 before 9.0.5-00.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Source: CVE Program / CVE List V5

Vulnerability Type

CWE-61

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Hitachi	Hitachi Dynamic Link Manager for Linux	8.6.2.-00 ~ 9.0.5-00	-

II. Public POCs for CVE-2026-91763

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-91763

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Other References for CVE-2026-91763 (1)

https://www.hitachi.com/products/it/software/security/info/vuls/hitachi-sec-2026-166/index.html vendor-advisory

https://www.cve.org/CVERecord?id=CVE-2026-91763

Same Patch Batch · Hitachi · 2026-11-10 · 17 CVEs total

CVE-2026-115646	9.8 CRITICAL	Partial String Comparison Vulnerability in HiRDB
CVE-2026-86579	8.2 HIGH	Binary Planting Vulnerability in Hitachi Dynamic Link Manager for Windows
CVE-2026-91761	8.2 HIGH	Insecure Temporary File Vulnerability in Hitachi Dynamic Link Manager for Linux
CVE-2026-91754	8.1 HIGH	Stack-based Buffer Overflow Vulnerability in Hitachi Dynamic Link Manager for VMware
CVE-2026-91756	8.1 HIGH	OS Command Injection Vulnerability in Hitachi Dynamic Link Manager for VMware
CVE-2026-91755	8.1 HIGH	Integer Overflow Vulnerability in Hitachi Dynamic Link Manager for VMware
CVE-2026-91764	8.1 HIGH	Improper Link Resolution Before File Access Vulnerability in Hitachi Dynamic Link Manager
CVE-2026-91762	7.9 HIGH	Insecure Temporary File Vulnerability in Hitachi Dynamic Link Manager for Linux
CVE-2026-91758	7.8 HIGH	Out-of-bounds Read and Write Vulnerability in Hitachi Dynamic Link Manager for Linux
CVE-2026-91759	7.8 HIGH	Out-of-Bounds Write Vulnerability in Hitachi Dynamic Link Manager for Linux
CVE-2026-92864	7.3 HIGH	Insecure Temporary File Vulnerability in Hitachi Dynamic Link Manager for AIX (for markets
CVE-2026-112125	7.3 HIGH	Incorrect Permission Assignment for Critical Resource Vulnerability in HA Monitor
CVE-2026-86578	7.3 HIGH	Link Following Vulnerability in Hitachi Dynamic Link Manager for Windows
CVE-2026-91757	7.1 HIGH	OS Command Injection Vulnerability in Hitachi Dynamic Link Manager for VMware
CVE-2026-92863	7.0 HIGH	Integer Overflow Vulnerability in Hitachi Dynamic Link Manager for AIX (for the Japanese m
CVE-2026-91760	7.0 HIGH	Heap-based Buffer Overflow Vulnerability in Hitachi Dynamic Link Manager for Linux

IV. Related Vulnerabilities

Same product: Hitachi Dynamic Link Manager for Linux

Same vendor: Hitachi

Same weakness: CWE-61