Heap-based buffer overflow in Siemens SINUMERIK 808D
Priority LOW 35CWE-122Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-122 and the CVSS impact.
Summary
A vulnerability has been identified in SINUMERIK 808D (All versions), SINUMERIK 828D (All versions < V4.95). Affected devices don't process correctly certain special crafted packets sent to port 102/tcp, which could allow an attacker to cause a denial-of-service in the device.
Why it matters now
EPSS 0.01056 64th percentileScored 2026-11-07
Fix Fixed SINUMERIK 828D (Siemens): V4.95
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Siemens | SINUMERIK 808D | All versions | — | No fix listed | CNA |
| Siemens | SINUMERIK 828D | before V4.95 | V4.95 | Patch available | CNA |
- SINUMERIK 808D VendorSiemens Affected All versions Fixed in — No fix listed CNA
- SINUMERIK 828D VendorSiemens Affected before V4.95 Fixed in V4.95 Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:siemens:sinumerik_808d_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Siemens |
| cpe:2.3:h:siemens:sinumerik_808d:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:sinumerik_828d_firmware:*:*:*:*:*:*:*:* | before 4.95 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:sinumerik_828d:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
- cpe:2.3:o:siemens:sinumerik_808d_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Siemens
- cpe:2.3:h:siemens:sinumerik_808d:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:sinumerik_828d_firmware:*:*:*:*:*:*:*:* Versions before 4.95 Vulnerable ·Siemens
- cpe:2.3:h:siemens:sinumerik_828d:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
Remediation
- Fix · CNA SINUMERIK 828D (Siemens) Fixed in V4.95
Timeline
- 2026-10-02 Threatist record created from CVE-2021-37199
- 2026-10-03 Alias added: GHSA-q6gp-rmpv-2ghj
References
Sources
- CVE-2021-37199 · CVE Program
- CVE-2021-37199 · NVD
- FIRST EPSS
- GHSA-q6gp-rmpv-2ghj · GitHub Advisory Database · CC BY 4.0
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