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No exploitation reportedFix available

CVE-2019-13946

No exploitation reported by the sources we read.

  • Published2020-02-11
  • Fixed in3.0
  • WeaknessCWE-400

Am I 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

Profinet-IO (PNIO) stack versions prior V06.00 do not properly limit internal resource allocation when multiple legitimate diagnostic package requests are sent to the DCE-RPC interface. This could lead to a denial of service condition due to lack of memory for devices that include a vulnerable version of the stack. The security vulnerability could be exploited by an attacker with network access to an affected device. Successful exploitation requires no system privileges and no user interaction. An attacker could use the vulnerability to compromise the availability of the device.

Timeline

dates in UTC
  1. 2020-02-1116:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-13946?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-13946?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Siemens scalance xb-200 firmwareversion to verify
BranchAffectedFixed in
3.0< 3.03.0
—all versionsno fix published
Siemens scalance xc-200 firmwareversion to verify
BranchAffectedFixed in
3.0< 3.03.0
—all versionsno fix published
Siemens scalance xp-200 firmwareversion to verify
BranchAffectedFixed in
3.0< 3.03.0
—all versionsno fix published

49 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

  • ICSA-20-042-04 CISA198 known affected

    Siemens PROFINET-IO Stack (Update H)

    Development/Evaluation Kits for PROFINET IO: DK Standard Ethernet Controller · Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200 · Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200P · +195 more

Full record on NVD

Fix

  1. Update Siemens scalance xb-200 firmware to 3.0
  2. Vendor fix CISA ICSA-20-042-04 · 5 productsUpdate to V3.3 or later version
  3. Vendor fix CISA ICSA-20-042-04 · 3 productsUpdate to V4.1.0 or later version
  4. Vendor fix CISA ICSA-20-042-04 · 4 productsUpdate to V4.2.0 or later version
  5. Mitigation from the vendor CISA ICSA-20-042-04 · 198 productsDisable PROFINET in products, where PROFINET is optional and not used in your environment
  6. Mitigation from the vendor CISA ICSA-20-042-04 · 198 productsBlock incoming DCE-RPC packets (port 34964/udp) from untrusted networks
  7. Mitigation from the vendor CISA ICSA-20-042-04 · 14 productsCreate a firewall rule that blocks the PROFINET Context Manager port (34964/udp)

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionnone2024-07-09
  • OpenCVESSVC decisionnone—
  • CNACVSS 3.17.5read 2026-10-23
  • NVDCVSS 3.17.5read 2026-10-23
  • NVDCVSS 2.07.8read 2026-10-23
  • CNAweakness (CWE)CWE-400read 2026-10-23
  • NVDweakness (CWE)CWE-400read 2026-10-23
  • FIRST EPSSEPSS score1.5 %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
2020-02-11
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2019-13946?

Profinet-IO (PNIO) stack versions prior V06.00 do not properly limit internal resource allocation when multiple legitimate diagnostic package requests are sent to the DCE-RPC interface. This could lead to a denial of service condition due to lack of memory for devices that include a vulnerable version of the stack. The security vulnerability could be exploited by an attacker with network access to an affected device. Successful exploitation requires no system privileges and no user interaction. An attacker could use the vulnerability to compromise the availability of the device.

Is CVE-2019-13946 actively exploited?

Active exploitation of CVE-2019-13946 has not been confirmed. Its EPSS score was 1.5% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-13946?

CVE-2019-13946 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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