CVE-2015-2177
A public proof of concept exists; no exploitation attested.
- Published2015-03-07
- 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 S7-300 CPU devices allow remote attackers to cause a denial of service (defect-mode transition) via crafted packets on (1) TCP port 102 or (2) Profibus.
Timeline
dates in UTC- 2015-03-0702:59CVE publishedNVD
- 2026-10-2319:23EPSS crossed 10 %FIRST EPSS
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2015-2177?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2015-2177?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 |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| — | all versions | 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 S7-300 CPU Denial-of-Service Vulnerability
Siemens SIMATIC S7-300 CPU family: vers:all/*
Fix
- Mitigation from the vendor CISA ICSA-15-064-04 · 1 productSiemens recommends the following mitigations:
- Mitigation from the vendor CISA ICSA-15-064-04 · 1 productApply protection-level 3 (Read/Write protection),
- Mitigation from the vendor CISA ICSA-15-064-04 · 1 productApply cell protection concept,Operational Guidelines for Industrial Security, https://www.siemens.com/cert/operational-guidelines-industrial-security, web site last accessed March 05, 2015.
- Mitigation from the vendor CISA ICSA-15-064-04 · 1 productUse VPN for protecting network communication between cells,
- Mitigation from the vendor CISA ICSA-15-064-04 · 1 productand Apply Defense-in-Depth.Further information about Defense-in-Depth, http://www.industry.siemens.com/topics/global/en/industrial-security/concept/Pages/defense-in-depth.aspx, web site last accessed March 05, 2015.
- Mitigation from the vendor CISA ICSA-15-064-04 · 1 productFor more information on these vulnerabilities and detailed instructions, please see Siemens Security Advisory SSA-987029 at the following location: http://www.siemens.com/cert/advisories
Advisories and patches
- www.siemens.comVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
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
- 2015-03-07
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2015-2177?
Is CVE-2015-2177 actively exploited?
What is the CVSS score for CVE-2015-2177?
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