Threat Investigation
Request a demo

CVE-2021-25668

Critical

Description

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 webserver may result in write out of bounds in heap. An attacker might leverage this to cause denial-of-service on the device and potentially remotely execute code.

SeverityCritical
CVSS9.8
Exploit probability—
ProductSiemens Scalance X200-4p Irt Firmware
PublishedApr 22, 2021
First seenApr 22, 2021
Weakness typeCWE-122CWE-122

How to fix

Update
  • siemens scalance_x200-4p_irt_firmware5.5.1 or later
  • siemens scalance_x201-3p_irt_firmware5.5.1 or later
  • siemens scalance_x201-3p_irt_pro_firmware5.5.1 or later
  • siemens scalance_x202-2_irt_firmware5.5.1 or later
  • siemens scalance_x202-2p_irt_pro_firmware5.5.1 or later
  • siemens scalance_x204_irt_firmware5.5.1 or later
  • siemens scalance_x204_irt_pro_firmware5.5.1 or later
  • siemens scalance_x204-2_firmware5.2.5 or later
  • siemens scalance_x204-2fm_firmware5.2.5 or later
  • siemens scalance_x204-2ld_firmware5.2.5 or later
  • siemens scalance_x204-2ld_ts_firmware5.2.5 or later
  • siemens scalance_x204-2ts_firmware5.2.5 or later

Affected products

ProductAffected versionsFixed in
siemens scalance_x200-4p_irt_firmwarev < 5.5.15.5.1
siemens scalance_x201-3p_irt_firmwarev < 5.5.15.5.1
siemens scalance_x201-3p_irt_pro_firmwarev < 5.5.15.5.1
siemens scalance_x202-2_irt_firmwarev < 5.5.15.5.1
siemens scalance_x202-2p_irt_pro_firmwarev < 5.5.15.5.1
siemens scalance_x204_irt_firmwarev < 5.5.15.5.1
siemens scalance_x204_irt_pro_firmwarev < 5.5.15.5.1
siemens scalance_x204-2_firmwarev < 5.2.55.2.5
siemens scalance_x204-2fm_firmwarev < 5.2.55.2.5
siemens scalance_x204-2ld_firmwarev < 5.2.55.2.5
siemens scalance_x204-2ld_ts_firmwarev < 5.2.55.2.5
siemens scalance_x204-2ts_firmwarev < 5.2.55.2.5
siemens scalance_x206-1_firmwarev < 5.2.55.2.5
siemens scalance_x206-1ld_firmwarev < 5.2.55.2.5
siemens scalance_x208_firmwarev < 5.2.55.2.5
siemens scalance_x208pro_firmwarev < 5.2.55.2.5
siemens scalance_x212-2_firmwarev < 5.2.55.2.5
siemens scalance_x212-2ld_firmwarev < 5.2.55.2.5
siemens scalance_x216_firmwarev < 5.2.55.2.5
siemens scalance_x224_firmwarev < 5.2.55.2.5
siemens scalance_xf201-3p_irt_firmwarev < 5.5.15.5.1
siemens scalance_xf202-2p_irt_firmwarev < 5.5.15.5.1
siemens scalance_xf204_firmwarev < 5.2.55.2.5
siemens scalance_xf204_irt_firmwarev < 5.5.15.5.1
siemens scalance_xf204-2_firmwarev < 5.2.55.2.5
siemens scalance_xf204-2ba_irt_firmwarev < 5.5.15.5.1
siemens scalance_xf206-1_firmwarev < 5.2.55.2.5
siemens scalance_xf208_firmwarev < 5.2.55.2.5
siemens scalance_x202-2p_irt_firmwarev < 5.5.15.5.1

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.