VIR Vulnerability Intelligence Relay

CVE-2021-25667

high
Published 2021-03-15 · Modified 2026-06-02
💬 Discuss on Community ✚ Propose mitigation
CVSS v3
8.8
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4 NEW
—
not yet in upstream
VIR risk
8.8

Description

A vulnerability has been identified in RUGGEDCOM RM1224 (All versions >= V4.3 and < V6.4), SCALANCE M-800 (All versions >= V4.3 and < V6.4), SCALANCE S615 (All versions >= V4.3 and < V6.4), SCALANCE SC-600 Family (All versions >= V2.0 and < V2.1.3), SCALANCE XB-200 (All versions < V4.1), SCALANCE XC-200 (All versions < V4.1), SCALANCE XF-200BA (All versions < V4.1), SCALANCE XM400 (All versions < V6.2), SCALANCE XP-200 (All versions < V4.1), SCALANCE XR-300WG (All versions < V4.1), SCALANCE XR500 (All versions < V6.2). Affected devices contain a stack-based buffer overflow vulnerability in the handling of STP BPDU frames that could allow a remote attacker to trigger a denial-of-service condition or potentially remote code execution. Successful exploitation requires the passive listening feature of the device to be active.

Predictions

Exploit likelihood
82%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Application impact
VendorProductVersionsFixed
siemens siemensruggedcom_rm1224-
siemens siemensscalance_m-800-
siemens siemensscalance_s615-
siemens siemensscalance_x300wg-
siemens siemensscalance_xm400-
siemens siemensscalance_xr500-
siemens siemensscalance_sc622-2c-
siemens siemensscalance_sc632-2c-
siemens siemensscalance_sc636-2c-
siemens siemensscalance_sc642-2c-
siemens siemensscalance_sc646-2c-
siemens siemensscalance_xb-200-
siemens siemensscalance_xc-200-
siemens siemensscalance_xf-200ba-
siemens siemensscalance_xp-200-

References

CWEs

CWE-121 CWE-787

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.