Memory leak in Siemens Automation License Manager (ALM) 4.x and 5.x before 5.2 allows…
Priority LOW 18CWE-399Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-399 and the CVSS impact.
Summary
Memory leak in Siemens Automation License Manager (ALM) 4.x and 5.x before 5.2 allows remote attackers to cause a denial of service (memory consumption) via crafted packets.
Why it matters now
EPSS 0.00892 59th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:siemens:automation_license_manager:4.0:*:*:*:*:*:*:* | 4.0 | Vulnerable | Siemens |
| cpe:2.3:a:siemens:automation_license_manager:5.0:*:*:*:*:*:*:* | 5.0 | Vulnerable | Siemens |
| cpe:2.3:a:siemens:automation_license_manager:5.1:*:*:*:*:*:*:* | 5.1 | Vulnerable | Siemens |
| cpe:2.3:a:siemens:automation_license_manager:5.1:sp1:*:*:*:*:*:* | 5.1 sp1 | Vulnerable | Siemens |
- cpe:2.3:a:siemens:automation_license_manager:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Siemens
- cpe:2.3:a:siemens:automation_license_manager:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Siemens
- cpe:2.3:a:siemens:automation_license_manager:5.1:*:*:*:*:*:*:* Versions 5.1 Vulnerable ·Siemens
- cpe:2.3:a:siemens:automation_license_manager:5.1:sp1:*:*:*:*:*:* Versions 5.1 sp1 Vulnerable ·Siemens
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2012-4691
- 2026-10-03 Alias added: GHSA-3g8v-fw4m-xm3p
References
More Siemens Automation License Manager vulnerabilities
- TI-2022-21296 Path traversal in Siemens Automation License Manager V5 CVSS 3.1CRITICAL 9.8
- TI-2018-08180 Path traversal in Siemens Automation License Manager 5, Automation License Manager 6 CVSS 3.0HIGH 8.8
- TI-2016-07037 Siemens Automation License Manager (ALM) before 5.3 SP3 allows remote attackers to write… CVSS 3.0CRITICAL 9.1
- TI-2022-21295 A vulnerability has been identified in Automation License Manager V5 (All versions)… CVSS 3.1HIGH 8.2
- TI-2011-03900 Multiple buffer overflows in Siemens Automation License Manager (ALM) 4.0 through… CVSS 2.0HIGH 7.5
- TI-2016-07035 Siemens Automation License Manager (ALM) before 5.3 SP3 Update 1 allows remote attackers… CVSS 3.0HIGH 7.5
Sources
- CVE-2012-4691 · CVE Program
- CVE-2012-4691 · NVD
- FIRST EPSS
- GHSA-3g8v-fw4m-xm3p · GitHub Advisory Database · CC BY 4.0
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