CVE-2021-37182A vulnerability has been identified in SCALANCE XM408-4C (All versions < V6.5), SCALANCE XM408-4C (L3 int.) (All versions < V6.5),…
- 7.5HighCVSS base score
- 0.64%Exploitation in 30 daysEPSS · top 49% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A vulnerability has been identified in SCALANCE XM408-4C (All versions < V6.5), SCALANCE XM408-4C (L3 int.) (All versions < V6.5), SCALANCE XM408-8C (All versions < V6.5), SCALANCE XM408-8C (L3 int.) (All versions < V6.5), SCALANCE XM416-4C (All versions < V6.5), SCALANCE XM416-4C (L3 int.) (All versions < V6.5), SCALANCE XR524-8C, 1x230V (All versions < V6.5), SCALANCE XR524-8C, 1x230V (L3 int.) (All versions < V6.5), SCALANCE XR524-8C, 24V (All versions < V6.5), SCALANCE XR524-8C, 24V (L3 int.) (All versions < V6.5), SCALANCE XR524-8C, 2x230V (All versions < V6.5), SCALANCE XR524-8C, 2x230V (L3 int.) (All versions < V6.5), SCALANCE XR526-8C, 1x230V (All versions < V6.5), SCALANCE XR526-8C, 1x230V (L3 int.) (All versions < V6.5), SCALANCE XR526-8C, 24V (All versions < V6.5), SCALANCE XR526-8C, 24V (L3 int.) (All versions < V6.5), SCALANCE XR526-8C, 2x230V (All versions < V6.5), SCALANCE XR526-8C, 2x230V (L3 int.) (All versions < V6.5), SCALANCE XR528-6M (All versions < V6.5), SCALANCE XR528-6M (2HR2) (All versions < V6.5), SCALANCE XR528-6M (2HR2, L3 int.) (All versions < V6.5), SCALANCE XR528-6M (L3 int.) (All versions < V6.5), SCALANCE XR552-12M (All versions < V6.5), SCALANCE XR552-12M (2HR2) (All versions < V6.5), SCALANCE XR552-12M (2HR2) (All versions < V6.5), SCALANCE XR552-12M (2HR2, L3 int.) (All versions < V6.5). The OSPF protocol implementation in affected devices fails to verify the checksum and length fields in the OSPF LS Update messages. An unauthenticated remote attacker could exploit this vulnerability to cause interruptions in the network by sending specially crafted OSPF packets. Successful exploitation requires OSPF to be enabled on an affected device.
Timeline
ID reserved
By siemens
- 11 months later
· 11 months later
Published
- 2 years later
· 2 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.64% · top 49% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
- affected All versions < V6.5
Siemens · SCALANCE XM408-4C (L3 int.)
- affected All versions < V6.5
- affected All versions < V6.5
Siemens · SCALANCE XM408-8C (L3 int.)
- affected All versions < V6.5
- affected All versions < V6.5
Siemens · SCALANCE XM416-4C (L3 int.)
- affected All versions < V6.5
Siemens · SCALANCE XR524-8C, 1x230V
- affected All versions < V6.5
Siemens · SCALANCE XR524-8C, 1x230V (L3 int.)
- affected All versions < V6.5
Siemens · SCALANCE XR524-8C, 24V
- affected All versions < V6.5
Siemens · SCALANCE XR524-8C, 24V (L3 int.)
- affected All versions < V6.5
Siemens · SCALANCE XR524-8C, 2x230V
- affected All versions < V6.5
Siemens · SCALANCE XR524-8C, 2x230V (L3 int.)
- affected All versions < V6.5
Siemens · SCALANCE XR526-8C, 1x230V
- affected All versions < V6.5
Siemens · SCALANCE XR526-8C, 1x230V (L3 int.)
- affected All versions < V6.5
Siemens · SCALANCE XR526-8C, 24V
- affected All versions < V6.5
Siemens · SCALANCE XR526-8C, 24V (L3 int.)
- affected All versions < V6.5
Siemens · SCALANCE XR526-8C, 2x230V
- affected All versions < V6.5
Siemens · SCALANCE XR526-8C, 2x230V (L3 int.)
- affected All versions < V6.5
- affected All versions < V6.5
Siemens · SCALANCE XR528-6M (2HR2)
- affected All versions < V6.5
Siemens · SCALANCE XR528-6M (2HR2, L3 int.)
- affected All versions < V6.5
Siemens · SCALANCE XR528-6M (L3 int.)
- affected All versions < V6.5
- affected All versions < V6.5
Siemens · SCALANCE XR552-12M (2HR2)
- affected All versions < V6.5
Siemens · SCALANCE XR552-12M (2HR2)
- affected All versions < V6.5
Siemens · SCALANCE XR552-12M (2HR2, L3 int.)
- affected All versions < V6.5
References
References1
- https://cert-portal.siemens.com/productcert/pdf/ssa-145224.pdf (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2021-23756 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2021-37182)Record last updated .