CVE-2016-2201
No exploitation reported by the sources we read.
- Published2016-02-08
- WeaknessCWE-20
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
Siemens SIMATIC S7-1500 CPU devices before 1.8.3 allow remote attackers to bypass a replay protection mechanism via packets on TCP port 102.
Timeline
dates in UTC- 2016-02-0816:59CVE 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-2016-2201?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2016-2201?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 |
|---|---|---|---|
| 1.8 | = 1.8.2 | 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 S7-1500 CPU Vulnerabilities
Siemens SIMATIC S7-1500 CPU family: <1.8.3
Fix
- Mitigation from the vendor CISA ICSA-16-040-02 · 1 productSiemens has released SIMATIC S7-1500 firmware Version 1.8.3, which addresses the identified vulnerabilities and recommends that users update to the new firmware version, which is available at the following URL (https://support.industry.siemens.com/cs/de/en/view/109478459)
- Mitigation from the vendor CISA ICSA-16-040-02 · 1 productAs a general security measure, Siemens strongly recommends that users protect network access to SIMATIC S7-1500 CPUs. Siemens advises users to configure the host environment according to operational guidelines, provided in the following URL (https://www.siemens.com/cert/operational-guidelines-indus…
- Mitigation from the vendor CISA ICSA-16-040-02 · 1 productSiemens security advisory, SSA-253230, is available at the following URL (https://www.siemens.com/cert/advisories)
Advisories and patches
- www.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 3.05.3read 2026-10-23
- NVDCVSS 2.05read 2026-10-23
- NVDweakness (CWE)CWE-20read 2026-10-23
- FIRST EPSSEPSS score2.9 %2026-10-22
Technical details
- CVSS v3 Vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Published
- 2016-02-08
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2016-2201?
Is CVE-2016-2201 actively exploited?
What is the CVSS score for CVE-2016-2201?
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Related vulnerabilities
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