CVE-2019-13921
No exploitation reported by the sources we read.
- Published2019-10-10
- WeaknessCWE-400 · CWE-410
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 WinAC RTX (F) 2010 (All versions < SP3 Update 1). Affected versions of the software contain a vulnerability that could allow an unauthenticated attacker to trigger a denial-of-service condition. The vulnerability can be triggered if a large HTTP request is sent to the executing service. The security vulnerability could be exploited by an attacker with network access to the affected systems. Successful exploitation requires no system privileges and no user interaction. An attacker could use the vulnerability to compromise availability of the service provided by the software.
Timeline
dates in UTC- 2019-10-1014:15CVE 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-2019-13921?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-13921?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 |
|---|---|---|---|
| — | all versions | no fix published | NVD |
| — | = sp1 | no fix published | NVD |
| — | = sp2 | 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
Siemens SIMATIC WinAC RTX (F) 2010 (Update A)
Siemens SIMATIC WinAC RTX (F) 2010: All versions < SP3 Update 1
Fix
- Vendor fix CISA ICSA-19-281-03 · 1 productUpdate to SIMATIC WinAC RTX (F) 2010 SP3 Update 1 https://support.industry.siemens.com/cs/ww/en/view/109772291
- Mitigation from the vendor CISA ICSA-19-281-03 · 1 productRestrict network access to the host containing the affected service.
- Mitigation from the vendor CISA ICSA-19-281-03 · 1 productIf the service is not used as a server, configure Windows Firewall to disable communications on the port of the vulnerable service.
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 3.17.5read 2026-10-23
- NVDCVSS 2.05read 2026-10-23
- CNAweakness (CWE)CWE-410read 2026-10-23
- NVDweakness (CWE)CWE-400read 2026-10-23
- FIRST EPSSEPSS score1.4 %2026-10-22
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
- 2019-10-10
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2019-13921?
Is CVE-2019-13921 actively exploited?
What is the CVSS score for CVE-2019-13921?
Running Siemens SIMATIC WinAC RTX (F)? Hear about its next vulnerability
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.