CRLF injection vulnerability in the integrated web server on Siemens SIMATIC S7-1200 CPU devices 2.x and 3.x allows remote attackers to inje
CRLF injection vulnerability in the integrated web server on Siemens SIMATIC S7-1200 CPU devices 2.x and 3.x allows remote attackers to inject arbitrary HTTP headers via unspecified vectors.
- Published
- Apr 25, 2014
- Updated
- Jun 16, 2026
- EPSS
- 2.4% · 84th percentile
- CWE
- CWE-94
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Report tools
Action score
24
Monitor
Low priority for now.
- CVSS
- 23 / 40 · 5.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 2.4%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| siemens | simatic s7 cpu 1200 firmware | cpe:2.3:o:siemens:simatic_s7_cpu_1200_firmware |
| siemens | simatic s7 cpu-1211c | cpe:2.3:h:siemens:simatic_s7_cpu-1211c |
| siemens | simatic s7 cpu 1212c | cpe:2.3:h:siemens:simatic_s7_cpu_1212c |
| siemens | simatic s7 cpu 1214c | cpe:2.3:h:siemens:simatic_s7_cpu_1214c |
| siemens | simatic s7 cpu 1215c | cpe:2.3:h:siemens:simatic_s7_cpu_1215c |
| siemens | simatic s7 cpu 1217c | cpe:2.3:h:siemens:simatic_s7_cpu_1217c |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- siemens simatic s7 cpu 1200 firmware2.0
- siemens simatic s7 cpu 1200 firmware3.0
- siemens simatic s7 cpu 1200 firmware3.0.2
- siemens simatic s7 cpu 1212call versions
- siemens simatic s7 cpu 1214call versions
- siemens simatic s7 cpu 1215call versions
- siemens simatic s7 cpu 1217call versions
- siemens simatic s7 cpu-1211call versions
Same product
siemens: all recordsOther highest-scoring records for the same primary product.
- CVE-2014-2250The random-number generator on Siemens SIMATIC S7-1200 CPU PLC devices with firmware before 4.0 does not have sufficient entropy, which make34Monitor
- CVE-2014-2258Siemens SIMATIC S7-1200 CPU PLC devices with firmware before 4.0 allow remote attackers to cause a denial of service (defect-mode transition32Monitor
- CVE-2014-2254Siemens SIMATIC S7-1200 CPU PLC devices with firmware before 4.0 allow remote attackers to cause a denial of service (defect-mode transition32Monitor
- CVE-2014-2256Siemens SIMATIC S7-1200 CPU PLC devices with firmware before 4.0 allow remote attackers to cause a denial of service (defect-mode transition32Monitor
- CVE-2014-2252Siemens SIMATIC S7-1200 CPU PLC devices with firmware before 4.0 allow remote attackers to cause a denial of service (defect-mode transition24Monitor
- CVE-2014-2908Cross-site scripting (XSS) vulnerability in the integrated web server on Siemens SIMATIC S7-1200 CPU devices 2.x and 3.x allows remote attac23Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
If successful
- Confidentiality
- none
- Integrity
- P · data or configuration can be modified
- Availability
- P · the service can be disrupted
- Attack complexity
- M
- Confidentiality impact
- None
- Integrity impact
- P
- Availability impact
- P
Weakness class (CWE)
CWE-94 · Improper Control of Generation of Code ('Code Injection')CVSS vector
AV:N/AC:M/Au:N/C:N/I:P/A:P
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- ics-cert.us-cert.gov/advisories/ICSA-14-114-02
- www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-892012.pdf
- cert-portal.siemens.com/productcert/pdf/ssa-892012.pdf
Vendor advisories and official records. Exploit/PoC links are deliberately left out.