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CVE-2025-40763VulnerabilityPublished

CVE-2025-40763: Siemens Altair Grid Engine · Uncontrolled Search Path Element

Affects Siemens Altair Grid EngineSource CVE Database V5

0

Not known to be exploited · CVSS 7.8 High.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score
7.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Nov 2025

  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 2026-10-26.

What to do

Affected software

ProductAffectedFixed in
Siemens Altair Grid EngineAffected
  • =0
Fixed in–

AI-suggested

1. Apply vendor patches immediately once Siemens releases updates for Altair Grid Engine V2026.0.0 or later that address this vulnerability. 2. Until patches are available, restrict local user permissions to prevent unauthorized modification of environment variables related to library loading paths. 3. Implement strict environment sanitization in scripts and services that launch Altair Grid Engine processes to avoid inheriting unsafe environment variables. 4. Use security mechanisms such as Linux Security Modules (e.g., SELinux, AppArmor) to restrict dynamic library loading paths and prevent loading from untrusted directories. 5. Monitor system logs and audit environment variable changes and library loading events for suspicious activity indicative of path hijacking attempts. 6. Conduct regular security training to raise awareness about the risks of local privilege escalation and enforce least privilege principles. 7. Consider isolating critical HPC workloads in hardened containers or virtual machines with controlled environments to limit exposure. 8. Review and harden user access controls to minimize the number of users with local access to systems running Altair Grid Engine.

Description

A vulnerability has been identified in Altair Grid Engine (All versions < V2026.0.0). Affected products do not properly validate environment variables when loading shared libraries, allowing path hijacking through malicious library substitution. This could allow a local attacker to execute arbitrary code with superuser privileges by manipulating the environment variable and placing a malicious library in the controlled path.

References

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