CVE-2019-10929

What it is

A vulnerability has been identified in SIMATIC CP 1626 (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants) (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions < V20.8), SIMATIC HMI Panel (incl. SIPLUS variants) (All versions), SIMATIC NET PC Software V14 (All versions < V14 SP1 Update 14), SIMATIC NET PC Software V15 (All versions), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions < V4.4.0), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V2.8.1), SIMATIC S7-1500 Software Controller (All versions < V20.8), SIMATIC S7-PLCSIM Advanced (All versions < V3.0), SIMATIC STEP 7 (TIA Portal) (All versions < V16), SIMATIC WinCC (TIA Portal) (All versions < V16), SIMATIC WinCC OA (All versions < V3.16 P013), SIMATIC WinCC Runtime Advanced (All versions < V16), SIMATIC WinCC Runtime Professional (All versions < V16), TIM 1531 IRC (incl. SIPLUS NET variants) (All versions < V2.1). Affected devices contain a message protection bypass vulnerability due to certain properties in the calculation used for integrity protection. This could allow an attacker in a Man-in-the-Middle position to modify network traffic sent on port 102/tcp to the affected devices.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data tampering.

Exploit odds

1.0% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2019-08-13 19:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 02:11 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.0% in the next 30 days (EPSS).
• Severity: 5.9 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2019-08-13 19:15 UTC

Last modified

2026-06-17 02:11 UTC

Exploit probability

1.0% · EPSS, next 30 days

Weakness

CWE-327 · Broken cryptographic algorithm

Record status

Modified

Affected

• Siemens Simatic Et 200sp Open Controller Cpu 1515sp Pc Firmware
• Siemens Simatic Et 200sp Open Controller Cpu 1515sp pc2 Firmware
• Siemens Simatic s7-1200 Cpu 1211c Firmware ≤ 4.0
• Siemens Simatic s7-1200 Cpu 1212c Firmware ≤ 4.0
• Siemens Simatic s7-1200 Cpu 1214c Firmware ≤ 4.0
• Siemens Simatic s7-1200 Cpu 1215c Firmware ≤ 4.0
• Siemens Simatic s7-1200 Cpu 1217c Firmware ≤ 4.0
• Siemens Simatic s7-1500 Cpu 1518 Firmware

Attack profile CVSS 3.1 · 5.9

Attack vector

Network

Complexity

High

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2019-10929.md and follow it. Check whether this project is affected by CVE-2019-10929. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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