CVE-2019-13940
No exploitation reported by the sources we read.
- Published2020-02-11
- Fixed in4.1
- WeaknessCWE-400
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 SIMATIC ET 200pro IM154-8 PN/DP CPU (All versions < V3.X.17), SIMATIC ET 200pro IM154-8F PN/DP CPU (All versions < V3.X.17), SIMATIC ET 200pro IM154-8FX PN/DP CPU (All versions < V3.X.17), SIMATIC ET 200S IM151-8 PN/DP CPU (All versions < V3.X.17), SIMATIC ET 200S IM151-8F PN/DP CPU (All versions < V3.X.17), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions < V4.1), SIMATIC S7-300 CPU 314C-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 315-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 315F-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 315T-3 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 317-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 317F-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 317T-3 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 317TF-3 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 319-3 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 319F-3 PN/DP (All versions < V3.X.17), SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants) (All versions), SIMATIC WinAC RTX 2010 (All versions), SIMATIC WinAC RTX F 2010 (All versions), SIPLUS ET 200S IM151-8 PN/DP CPU (All versions < V3.X.17), SIPLUS ET 200S IM151-8F PN/DP CPU (All versions < V3.X.17), SIPLUS S7-300 CPU 314C-2 PN/DP (All versions < V3.X.17), SIPLUS S7-300 CPU 315-2 PN/DP (All versions < V3.X.17), SIPLUS S7-300 CPU 315F-2 PN/DP (All versions < V3.X.17), SIPLUS S7-300 CPU 317-2 PN/DP (All versions < V3.X.17), SIPLUS S7-300 CPU 317F-2 PN/DP (All versions < V3.X.17). Affected devices contain a vulnerability that could cause a denial of service condition of the web server by sending specially crafted HTTP requests to ports 80/tcp and 443/tcp. Beyond the web service, no other functions or interfaces are affected by the denial of service condition.
Timeline
dates in UTC- 2020-02-1116:15CVE 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-2019-13940?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-13940?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 |
|---|---|---|---|
| 4.1 | < 4.1 | 4.1 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 4.1 | < 4.1 | 4.1 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 4.1 | < 4.1 | 4.1 | NVD |
21 more products in the sources.
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
Siemens SIMATIC S7 (Update B)
SIMATIC ET 200pro IM154-8 PN/DP CPU (6ES7154-8AB01-0AB0) · SIMATIC ET 200pro IM154-8F PN/DP CPU (6ES7154-8FB01-0AB0) · SIMATIC ET 200pro IM154-8FX PN/DP CPU (6ES7154-8FX00-0AB0) · +24 more
Fix
- Update Siemens s7-1200 cpu 1211c firmware to 4.1
- Vendor fix CISA ICSA-20-042-05 · 1 productUpdate to V4.1 or later version
- Vendor fix CISA ICSA-20-042-05 · 1 productUpdate to V3.X.17 or later version
- Mitigation from the vendor CISA ICSA-20-042-05 · 27 productsRestrict access to the device to the internal or VPN network and to trusted IP addresses only
- Mitigation from the vendor CISA ICSA-20-042-05 · 27 productsDisable the web server. Note that this feature is disabled by default
- Mitigation from the vendor CISA ICSA-20-042-05 · 27 productsRestrict access to the web server (80/tcp, 443/tcp) to trusted IP addresses
- No fix planned, says the vendor CISA ICSA-20-042-05 · 4 productsCurrently no fix is planned
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
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Published
- 2020-02-11
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2019-13940?
Is CVE-2019-13940 actively exploited?
What is the CVSS score for CVE-2019-13940?
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