The webserver of the affected devices contains a vulnerability that may lead to a denial of service condition.
The webserver of the affected devices contains a vulnerability that may lead to a denial of service condition. An attacker may cause a denial of service situation which leads to a restart of the webserver of the affected device. The security vulnerability could be exploited by an attacker with network access to the affected systems. Successful exploitation requires no system privileges and no user interaction. An attacker could use the vulnerability to compromise availability of the device.
- Published
- Apr 17, 2019
- Updated
- Jun 16, 2026
- EPSS
- 1.4% · 71th percentile
- CWE
- CWE-125
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Report tools
Action score
30
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.4%
CISA SSVC decision
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · siemens
- 7.5
- NVD has not scored this yet; the score shown is the CNA’s.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| siemens | cp1604 firmware | cpe:2.3:o:siemens:cp1604_firmware |
| siemens | cp1604 | cpe:2.3:h:siemens:cp1604 |
| siemens | cp1616 firmware | cpe:2.3:o:siemens:cp1616_firmware |
| siemens | cp1616 | cpe:2.3:h:siemens:cp1616 |
| siemens | simatic rf185c firmware | cpe:2.3:o:siemens:simatic_rf185c_firmware |
| siemens | simatic rf185c | cpe:2.3:h:siemens:simatic_rf185c |
| siemens | simatic cp343-1 advanced firmware | cpe:2.3:o:siemens:simatic_cp343-1_advanced_firmware |
| siemens | simatic cp343-1 advanced | cpe:2.3:h:siemens:simatic_cp343-1_advanced |
| siemens | simatic cp443-1 firmware | cpe:2.3:o:siemens:simatic_cp443-1_firmware |
| siemens | simatic cp443-1 | cpe:2.3:h:siemens:simatic_cp443-1 |
| siemens | simatic cp443-1 advanced firmware | cpe:2.3:o:siemens:simatic_cp443-1_advanced_firmware |
| siemens | simatic cp443-1 advanced | cpe:2.3:h:siemens:simatic_cp443-1_advanced |
and 88 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- siemens cp1604 firmwareall versions
- siemens cp1616 firmwareall versions
- siemens simatic cp343-1 advanced firmwareall versions
- siemens simatic cp443-1 advanced firmwareall versions
- siemens simatic cp443-1 firmwareall versions
- siemens simatic cp443-1 opc uaall versions
- siemens simatic et 200 sp open controller cpu 1515sp pc firmwarebefore 2.1.6
- siemens simatic et 200 sp open controller cpu 1515sp pc2 firmwarebefore 2.7
- siemens simatic hmi comfort outdoor panels firmwarebefore 15.1
- siemens simatic hmi comfort outdoor panels firmware15.1
- siemens simatic hmi comfort panels firmwarebefore 15.1
- siemens simatic hmi comfort panels firmware15.1
- siemens simatic hmi ktp mobile panels ktp400f firmwarebefore 15.1
- siemens simatic hmi ktp mobile panels ktp400f firmware15.1
- siemens simatic hmi ktp mobile panels ktp700 firmwarebefore 15.1
- siemens simatic hmi ktp mobile panels ktp700 firmware15.1
- siemens simatic hmi ktp mobile panels ktp700f firmwarebefore 15.1
- siemens simatic hmi ktp mobile panels ktp700f firmware15.1
- siemens simatic hmi ktp mobile panels ktp900 firmwarebefore 15.1
- siemens simatic hmi ktp mobile panels ktp900 firmware15.1
Versions reported by the vendor
Affected version ranges reported by the assigning authority (siemens). Independent of NVD's CPE analysis and usually ahead of it.
Siemens SIMATIC CP 1604
- All versionsaffected
Siemens SIMATIC CP 1616
- All versionsaffected
Siemens SIMATIC CP 343-1 Advanced
- All versionsaffected
Siemens SIMATIC CP 443-1
- All versions < V3.3, All versions < V3.3affected
Siemens SIMATIC CP 443-1 Advanced
- All versions < V3.3affected
Siemens SIMATIC CP 443-1 OPC UA
- All versionsaffected
Siemens SIMATIC ET 200pro IM154-8 PN/DP CPU
- All versions < V3.2.16affected
Siemens SIMATIC ET 200pro IM154-8F PN/DP CPU
- All versions < V3.2.16affected
Siemens SIMATIC ET 200pro IM154-8FX PN/DP CPU
- All versions < V3.2.16affected
Siemens SIMATIC ET 200S IM151-8 PN/DP CPU
- All versions < V3.2.16affected
Siemens SIMATIC ET 200S IM151-8F PN/DP CPU
- All versions < V3.2.16affected
Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants)
- All versions < V2.1.6affected
Same product
siemens: all recordsOther highest-scoring records for the same primary product.
- CVE-2019-10923An attacker with network access to an affected product may cause a denial of service condition by breaking the real-time synchronization (IR30Monitor
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
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-125 · Out-of-bounds ReadCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-secondary
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)
ATT&CK techniques
—
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
- cert-portal.siemens.com/productcert/pdf/ssa-480230.pdf
- cert-portal.siemens.com/productcert/pdf/ssa-530931.pdf
Vendor advisories and official records. Exploit/PoC links are deliberately left out.