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CVE-2021-25669: A vulnerability has been identified in SCALANCE X200-4P IRT (All versions < 5.5.1), SCALANCE X201-3P IRT (All versions < 5.5.1), SCALANCE X201-3P IRT PRO (All versions < 5.5.1), SCALANCE X202-2 IRT...

CVE-2021-25669 · published 5 years ago

Summary

What to do

Update siemens scalance_x200-4p_irt_firmware to version 5.5.1 or later.
Update siemens scalance_x201-3p_irt_firmware to version 5.5.1 or later.
Update siemens scalance_x201-3p_irt_pro_firmware to version 5.5.1 or later.
Update siemens scalance_x202-2_irt_firmware to version 5.5.1 or later.
Update siemens scalance_x202-2p_irt_pro_firmware to version 5.5.1 or later.
Update siemens scalance_x204_irt_firmware to version 5.5.1 or later.
Update siemens scalance_x204_irt_pro_firmware to version 5.5.1 or later.
Update siemens scalance_x204-2_firmware to version 5.2.5 or later.
Update siemens scalance_x204-2fm_firmware to version 5.2.5 or later.
Update siemens scalance_x204-2ld_firmware to version 5.2.5 or later.
Update siemens scalance_x204-2ld_ts_firmware to version 5.2.5 or later.
Update siemens scalance_x204-2ts_firmware to version 5.2.5 or later.
Update siemens scalance_x206-1_firmware to version 5.2.5 or later.
Update siemens scalance_x206-1ld_firmware to version 5.2.5 or later.
Update siemens scalance_x208_firmware to version 5.2.5 or later.
Update siemens scalance_x208pro_firmware to version 5.2.5 or later.
Update siemens scalance_x212-2_firmware to version 5.2.5 or later.
Update siemens scalance_x212-2ld_firmware to version 5.2.5 or later.
Update siemens scalance_x216_firmware to version 5.2.5 or later.
Update siemens scalance_x224_firmware to version 5.2.5 or later.
Update siemens scalance_xf201-3p_irt_firmware to version 5.5.1 or later.
Update siemens scalance_xf202-2p_irt_firmware to version 5.5.1 or later.
Update siemens scalance_xf204_firmware to version 5.2.5 or later.
Update siemens scalance_xf204_irt_firmware to version 5.5.1 or later.
Update siemens scalance_xf204-2_firmware to version 5.2.5 or later.
Update siemens scalance_xf204-2ba_irt_firmware to version 5.5.1 or later.
Update siemens scalance_xf206-1_firmware to version 5.2.5 or later.
Update siemens scalance_xf208_firmware to version 5.2.5 or later.
Update siemens scalance_x202-2p_irt_firmware to version 5.5.1 or later.

Affected software

Vendor	Product	Affected versions
siemens	scalance_x200-4p_irt_firmware	< 5.5.1 `cpe:2.3:o:siemens:scalance_x200-4p_irt_firmware::::::::`
siemens	scalance_x201-3p_irt_firmware	< 5.5.1 `cpe:2.3:o:siemens:scalance_x201-3p_irt_firmware::::::::`
siemens	scalance_x201-3p_irt_pro_firmware	< 5.5.1 `cpe:2.3:o:siemens:scalance_x201-3p_irt_pro_firmware::::::::`
siemens	scalance_x202-2_irt_firmware	< 5.5.1 `cpe:2.3:o:siemens:scalance_x202-2_irt_firmware::::::::`
siemens	scalance_x202-2p_irt_pro_firmware	< 5.5.1 `cpe:2.3:o:siemens:scalance_x202-2p_irt_pro_firmware::::::::`
siemens	scalance_x204_irt_firmware	< 5.5.1 `cpe:2.3:o:siemens:scalance_x204_irt_firmware::::::::`
siemens	scalance_x204_irt_pro_firmware	< 5.5.1 `cpe:2.3:o:siemens:scalance_x204_irt_pro_firmware::::::::`
siemens	scalance_x204-2_firmware	< 5.2.5 `cpe:2.3:o:siemens:scalance_x204-2_firmware::::::::`
siemens	scalance_x204-2fm_firmware	< 5.2.5 `cpe:2.3:o:siemens:scalance_x204-2fm_firmware::::::::`
siemens	scalance_x204-2ld_firmware	< 5.2.5 `cpe:2.3:o:siemens:scalance_x204-2ld_firmware::::::::`
siemens	scalance_x204-2ld_ts_firmware	< 5.2.5 `cpe:2.3:o:siemens:scalance_x204-2ld_ts_firmware::::::::`
siemens	scalance_x204-2ts_firmware	< 5.2.5 `cpe:2.3:o:siemens:scalance_x204-2ts_firmware::::::::`
siemens	scalance_x206-1_firmware	< 5.2.5 `cpe:2.3:o:siemens:scalance_x206-1_firmware::::::::`
siemens	scalance_x206-1ld_firmware	< 5.2.5 `cpe:2.3:o:siemens:scalance_x206-1ld_firmware::::::::`
siemens	scalance_x208_firmware	< 5.2.5 `cpe:2.3:o:siemens:scalance_x208_firmware::::::::`
siemens	scalance_x208pro_firmware	< 5.2.5 `cpe:2.3:o:siemens:scalance_x208pro_firmware::::::::`
siemens	scalance_x212-2_firmware	< 5.2.5 `cpe:2.3:o:siemens:scalance_x212-2_firmware::::::::`
siemens	scalance_x212-2ld_firmware	< 5.2.5 `cpe:2.3:o:siemens:scalance_x212-2ld_firmware::::::::`
siemens	scalance_x216_firmware	< 5.2.5 `cpe:2.3:o:siemens:scalance_x216_firmware::::::::`
siemens	scalance_x224_firmware	< 5.2.5 `cpe:2.3:o:siemens:scalance_x224_firmware::::::::`
siemens	scalance_xf201-3p_irt_firmware	< 5.5.1 `cpe:2.3:o:siemens:scalance_xf201-3p_irt_firmware::::::::`
siemens	scalance_xf202-2p_irt_firmware	< 5.5.1 `cpe:2.3:o:siemens:scalance_xf202-2p_irt_firmware::::::::`
siemens	scalance_xf204_firmware	< 5.2.5 `cpe:2.3:o:siemens:scalance_xf204_firmware::::::::`
siemens	scalance_xf204_irt_firmware	< 5.5.1 `cpe:2.3:o:siemens:scalance_xf204_irt_firmware::::::::`
siemens	scalance_xf204-2_firmware	< 5.2.5 `cpe:2.3:o:siemens:scalance_xf204-2_firmware::::::::`
siemens	scalance_xf204-2ba_irt_firmware	< 5.5.1 `cpe:2.3:o:siemens:scalance_xf204-2ba_irt_firmware::::::::`
siemens	scalance_xf206-1_firmware	< 5.2.5 `cpe:2.3:o:siemens:scalance_xf206-1_firmware::::::::`
siemens	scalance_xf208_firmware	< 5.2.5 `cpe:2.3:o:siemens:scalance_xf208_firmware::::::::`
siemens	scalance_x202-2p_irt_firmware	< 5.5.1 `cpe:2.3:o:siemens:scalance_x202-2p_irt_firmware::::::::`

Original advisory text

A vulnerability has been identified in SCALANCE X200-4P IRT (All versions < 5.5.1), SCALANCE X201-3P IRT (All versions < 5.5.1), SCALANCE X201-3P IRT PRO (All versions < 5.5.1), SCALANCE X202-2 IRT (All versions < 5.5.1), SCALANCE X202-2P IRT (incl. SIPLUS NET variant) (All versions < 5.5.1), SCALANCE X202-2P IRT PRO (All versions < 5.5.1), SCALANCE X204 IRT (All versions < 5.5.1), SCALANCE X204 IRT PRO (All versions < 5.5.1), SCALANCE X204-2 (incl. SIPLUS NET variant) (All versions < V5.2.5), SCALANCE X204-2FM (All versions < V5.2.5), SCALANCE X204-2LD (incl. SIPLUS NET variant) (All versions < V5.2.5), SCALANCE X204-2LD TS (All versions < V5.2.5), SCALANCE X204-2TS (All versions < V5.2.5), SCALANCE X206-1 (All versions < V5.2.5), SCALANCE X206-1LD (All versions < V5.2.5), SCALANCE X208 (incl. SIPLUS NET variant) (All versions < V5.2.5), SCALANCE X208PRO (All versions < V5.2.5), SCALANCE X212-2 (incl. SIPLUS NET variant) (All versions < V5.2.5), SCALANCE X212-2LD (All versions < V5.2.5), SCALANCE X216 (All versions < V5.2.5), SCALANCE X224 (All versions < V5.2.5), SCALANCE XF201-3P IRT (All versions < 5.5.1), SCALANCE XF202-2P IRT (All versions < 5.5.1), SCALANCE XF204 (All versions < V5.2.5), SCALANCE XF204 IRT (All versions < 5.5.1), SCALANCE XF204-2 (incl. SIPLUS NET variant) (All versions < V5.2.5), SCALANCE XF204-2BA IRT (All versions < 5.5.1), SCALANCE XF206-1 (All versions < V5.2.5), SCALANCE XF208 (All versions < V5.2.5). Incorrect processing of POST requests in the web server may write out of bounds in stack. An attacker might leverage this to denial-of-service of the device or remote code execution.

References

https://cert-portal.siemens.com/productcert/pdf/ssa-187092.pdf Patch Vendor Advisory

Fix within

Internet-facing 3 days

Internal 60 days

Not known to be exploited
Can be exploited automatically (estimated)
Gives an attacker full control (estimated)

Severity

9.8 Critical

Exploitation

2% chance of attack within 30 days

Type

CWE-121Stack-based Buffer Overflow

CWE-787Out-of-bounds Write

Timeline

Published22 Apr 2021

Updated4 Nov 2026

First seen29 Sep 2026

Sources

CVE-2021-25669 · NVD

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