CVE-2018-11458
No exploitation reported by the sources we read.
- Published2018-12-12
- WeaknessCWE-190
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 SINUMERIK 828D V4.7 (All versions < V4.7 SP6 HF1), SINUMERIK 840D sl V4.7 (All versions < V4.7 SP6 HF5), SINUMERIK 840D sl V4.8 (All versions < V4.8 SP3). The integrated VNC server on port 5900/tcp of the affected products could allow a remote attacker to execute code with privileged permissions on the system by sending specially crafted network requests to port 5900/tcp. Please note that this vulnerability is only exploitable if port 5900/tcp is manually opened in the firewall configuration of network port X130. The security vulnerability could be exploited by an attacker with network access to the affected devices and port. Successful exploitation requires no privileges and no user interaction. The vulnerability could allow an attacker to compromise confidentiality, integrity and availability of the VNC server. At the time of advisory publication no public exploitation of this security vulnerability was known.
Timeline
dates in UTC- 2018-12-1216:29CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-11458?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-11458?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 |
|---|---|---|---|
| 4.7 | ≤ 4.7 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 4.7 | ≤ 4.7 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 4.8 | ≤ 4.8 | no fix published | 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-18-345-02 Siemens SINUMERIK Controllers (Update A)
SINUMERIK 808D V4.7 · SINUMERIK 808D V4.8 · SINUMERIK 828D V4.7 · +2 more
Fix
- Mitigation from the vendor CISA ICSA-18-345-02 · 1 productUpdate to V4.7 SP6 HF1 and follow recommendations from section Workarounds and Mitigations. - Download: SINUMERIK software can be obtained from your local Siemens account manager.
- Mitigation from the vendor CISA ICSA-18-345-02 · 1 productUpdate to V4.7 SP6 HF5 and follow recommendations from section Workarounds and Mitigations. - Download: SINUMERIK software can be obtained from your local Siemens account manager.
- Mitigation from the vendor CISA ICSA-18-345-02 · 1 productUpdate to V4.8 SP3 and follow recommendations from section Workarounds and Mitigations. - Download: SINUMERIK software can be obtained from your local Siemens account manager.
- Mitigation from the vendor CISA ICSA-18-345-02 · 5 productsSiemens has identified the following specific workarounds and mitigations thatcustomers can apply to reduce the risk:firewall on port X130privilege approach Check and restore default settings (4842/tcp and 5900/tcp blocked) for
- Mitigation from the vendor CISA ICSA-18-345-02 · 5 productsSiemens has identified the following specific workarounds and mitigations thatcustomers can apply to reduce the risk:firewall on port X130privilege approach Restrict system access to authorized personnel and follow a least
- Mitigation from the vendor CISA ICSA-18-345-02 · 5 productsSiemens has identified the following specific workarounds and mitigations thatcustomers can apply to reduce the risk:firewall on port X130privilege approach Apply cell protection concept
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 3.08.1read 2026-10-23
- NVDCVSS 2.09.3read 2026-10-23
- CNAweakness (CWE)CWE-190read 2026-10-23
- FIRST EPSSEPSS score4.6 %2026-10-22
Technical details
- CVSS v3 Vector
- CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2018-12-12
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2018-11458?
Is CVE-2018-11458 actively exploited?
What is the CVSS score for CVE-2018-11458?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.