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CVE-2021-37182· NVD / CVE Program· CNA siemens

A vulnerability has been identified in SCALANCE XM408-4C (All versions < V6.5), SCALANCE XM408-4C (L3 int.) (All versions < V6.5), SCALANCE

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.

HighCVSS 7.5 · v3.1—No exploit No fix recorded
Published
Jun 14, 2022
Updated
Jun 17, 2026
EPSS
0.6% · 48th percentile
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Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.6%

Noroxi analysis

No Noroxi analysis for this record yet

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Affected systems

VendorProduct
siemensscalance xm408-4c firmware
siemensscalance xm408-4c
siemensscalance xm408-4c l3 firmware
siemensscalance xm408-4c l3
siemensscalance xm408-8c firmware
siemensscalance xm408-8c
siemensscalance xm408-8c l3 firmware
siemensscalance xm408-8c l3
siemensscalance xm416-4c firmware
siemensscalance xm416-4c
siemensscalance xm416-4c l3 firmware
siemensscalance xm416-4c l3

and 22 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • siemens scalance xm408-4c firmwarebefore 6.5
  • siemens scalance xm408-4c l3 firmwarebefore 6.5
  • siemens scalance xm408-8c firmwarebefore 6.5
  • siemens scalance xm408-8c l3 firmwarebefore 6.5
  • siemens scalance xm416-4c firmwarebefore 6.5
  • siemens scalance xm416-4c l3 firmwarebefore 6.5
  • siemens scalance xr524-8c firmwarebefore 6.5
  • siemens scalance xr524-8c l3 firmwarebefore 6.5
  • siemens scalance xr526-8c firmwarebefore 6.5
  • siemens scalance xr526-8c l3 firmwarebefore 6.5
  • siemens scalance xr528-6m 2hr2 firmwarebefore 6.5
  • siemens scalance xr528-6m 2hr2 l3 firmwarebefore 6.5
  • siemens scalance xr528-6m firmwarebefore 6.5
  • siemens scalance xr528-6m l3 firmwarebefore 6.5
  • siemens scalance xr552-12m 2hr2 firmwarebefore 6.5
  • siemens scalance xr552-12m 2hr2 l3 firmwarebefore 6.5
  • siemens scalance xr552-12m firmwarebefore 6.5

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 SCALANCE XM408-4C

    • All versions < V6.5affected

  • Siemens SCALANCE XM408-4C (L3 int.)

    • All versions < V6.5affected

  • Siemens SCALANCE XM408-8C

    • All versions < V6.5affected

  • Siemens SCALANCE XM408-8C (L3 int.)

    • All versions < V6.5affected

  • Siemens SCALANCE XM416-4C

    • All versions < V6.5affected

  • Siemens SCALANCE XM416-4C (L3 int.)

    • All versions < V6.5affected

  • Siemens SCALANCE XR524-8C, 1x230V

    • All versions < V6.5affected

  • Siemens SCALANCE XR524-8C, 1x230V (L3 int.)

    • All versions < V6.5affected

  • Siemens SCALANCE XR524-8C, 24V

    • All versions < V6.5affected

  • Siemens SCALANCE XR524-8C, 24V (L3 int.)

    • All versions < V6.5affected

  • Siemens SCALANCE XR524-8C, 2x230V

    • All versions < V6.5affected

  • Siemens SCALANCE XR524-8C, 2x230V (L3 int.)

    • All versions < V6.5affected

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.

EPSS, last 120 days

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 researchers

Finders, 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-354 · Improper Validation of Integrity Check Value

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records