CVE-2018-11456
No exploitation reported by the sources we read.
- Published2018-08-07
- Fixed in5.3.4.4
- WeaknessCWE-284
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
A vulnerability has been identified in Automation License Manager 5 (All versions < 5.3.4.4). An attacker with network access to the device could send specially crafted network packets to determine whether or not a network port on another remote system is accessible or not. This allows the attacker to do basic network scanning using the victims machine. Successful exploitation requires a network connection to the affected device. The attacker does not need privileges, no user interaction is required. The impact is limited to determining whether or not a port on a target system is accessible by the affected device.
Timeline
dates in UTC- 2018-08-0715:29CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-11456?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-11456?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 5.3 | < 5.3.4.4 | 5.3.4.4 | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
ICSA-18-226-03 Siemens Automation License Manager
Automation License Manager 5 · Automation License Manager 6
Fix
- Update Siemens automation license manager to 5.3.4.4
- Vendor fix CISA ICSA-18-226-03 · 1 productUpdate to V5.3.4.4 - Download: https://support.industry.siemens.com/cs/ww/en/view/114358
- Mitigation from the vendor CISA ICSA-18-226-03 · 2 productsSiemens has identified the following specific workarounds and mitigations thatcustomers can apply to reduce the risk: Restrict network access as far as possible
Advisories and patches
- cert-portal.siemens.comVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.05.8read 2026-10-23
- NVDCVSS 2.05read 2026-10-23
- CNAweakness (CWE)CWE-284read 2026-10-23
- FIRST EPSSEPSS score1.3 %2026-10-23
Technical details
- CVSS v3 Vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
- Published
- 2018-08-07
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2018-11456?
Is CVE-2018-11456 actively exploited?
What is the CVSS score for CVE-2018-11456?
Running Automation License Manager? Hear about its next vulnerability
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Go further
- Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.