CVE-2016-2201
Siemens SIMATIC S7-1500 CPU devices before 1.8.3 allow remote attackers to bypass a replay...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2016-2201- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2016-2201- Updated
- 2026-11-02
EUVDEUVD-2016-3285 No score
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.
- Record
EUVD-2016-3285- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4597-h46x-2mwj
Siemens SIMATIC S7-1500 CPU devices before 1.8.3 allow remote attackers to bypass a replay...
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.
- Record
GHSA-4597-h46x-2mwj- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-20
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2016-2201 is a medium vulnerability (CVSS 5.3) in Siemens Simatic S7-1500 Cpu Firmware, published February 8, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.92%, the 87th percentile. No source names a fixed version.
References
siemens.com/cert/pool/cert/siemens_security_advisory_ssa-253230.pdf
securitytracker.com/id/1034954
securityfocus.com/bid/83110
ics-cert.us-cert.gov/advisories/ICSA-16-040-02
cert-portal.siemens.com/productcert/pdf/ssa-253230.pdf
nvd.nist.gov/vuln/detail/CVE-2016-2201
github.com/advisories/GHSA-4597-h46x-2mwj