CVE-2021-37205

🗓️ 09 Feb 2022 15:16:57Reported by siemensType

Vulnerability in SIMATIC PLCs & Controllers causing denial-of-service via specially prepared packets over port 102/tcp

Reporter	Title	Published	Views	Family All 15
BDU FSTEC	The vulnerability of the Simatic programmable logic controller’s software lies in the improper release of memory before deleting the last reference, allowing a intruder to trigger a service failure.	4 Apr 202200:00	–	bdu_fstec
Circl	CVE-2021-37205	9 Feb 202218:13	–	circl
CNNVD	Siemens SIMATIC S7-1500 系列产品输入验证错误漏洞	8 Feb 202200:00	–	cnnvd
CNVD	Denial of Service Vulnerability in Multiple Siemens Industrial Products (CNVD-2022-10002)	8 Feb 202200:00	–	cnvd
Cvelist	CVE-2021-37205	9 Feb 202215:16	–	cvelist
EUVD	EUVD-2021-23779	7 Oct 202500:30	–	euvd
ICS	Siemens SIMATIC Industrial Products (Update A)	8 Feb 202200:00	–	ics
NCSC	Vulnerabilities fixed in Siemens products	8 Feb 202200:00	–	ncsc
NVD	CVE-2021-37205	9 Feb 202216:15	–	nvd
OSV	CVE-2021-37205	9 Feb 202216:15	–	osv

NVD

Node

siemens simatic_drive_controller_cpu_1504d_tf_firmwareRange<2.9.4

AND

siemens simatic_drive_controller_cpu_1504d_tfMatch-

Node

siemens simatic_drive_controller_cpu_1507d_tf_firmwareRange<2.9.4

AND

siemens simatic_drive_controller_cpu_1507d_tfMatch-

Node

siemens simatic_et_200sp_open_controller_cpu_1515sp_pc2_firmware

AND

siemens simatic_et_200sp_open_controller_cpu_1515sp_pc2Match-

Node

siemens simatic_s7-plcsim_advanced_firmwareRange<4.0

siemens simatic_s7-plcsim_advanced_firmwareMatch4.0-

AND

siemens simatic_s7-plcsim_advancedMatch-

Node

siemens tim_1531_irc_firmwareRange2.2≥

AND

siemens tim_1531_ircMatch-

Node

siemens simatic_s7-1500_software_controller

Node

siemens simatic_s7-1200_cpu_1211c_firmwareRange4.5.0–4.5.2

AND

siemens simatic_s7-1200_cpu_1211cMatch-

Node

siemens simatic_s7-1200_cpu_1212c_firmwareRange4.5.0–4.5.2

AND

siemens simatic_s7-1200_cpu_1212cMatch-

Node

siemens simatic_s7-1200_cpu_1212fc_firmwareRange4.5.0–4.5.2

AND

siemens simatic_s7-1200_cpu_1212fcMatch-

Node

siemens simatic_s7-1200_cpu_1214fc_firmwareRange4.5.0–4.5.2

AND

siemens simatic_s7-1200_cpu_1214fcMatch-

Node

siemens simatic_s7-1200_cpu_1214c_firmwareRange4.5.0–4.5.2

AND

siemens simatic_s7-1200_cpu_1214cMatch-

Node

siemens simatic_s7-1200_cpu_1215fc_firmwareRange4.5.0–4.5.2

AND

siemens simatic_s7-1200_cpu_1215fcMatch-

Node

siemens simatic_s7-1200_cpu_1215c_firmwareRange4.5.0–4.5.2

AND

siemens simatic_s7-1200_cpu_1215cMatch-

Node

siemens simatic_s7-1200_cpu_1217c_firmwareRange4.5.0–4.5.2

AND

siemens simatic_s7-1200_cpu_1217cMatch-

Node

siemens simatic_s7-1500_cpu_1510sp-1_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1510sp-1Match-

Node

siemens simatic_s7-1500_cpu_1510sp_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1510spMatch-

Node

siemens simatic_s7-1500_cpu_1511-1_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1511-1Match-

Node

siemens simatic_s7-1500_cpu_1511c-1_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1511c-1Match-

Node

siemens simatic_s7-1500_cpu_1511f-1_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1511f-1Match-

Node

siemens simatic_s7-1500_cpu_1511t-1_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1511t-1Match-

Node

siemens simatic_s7-1500_cpu_1511tf-1_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1511tf-1Match-

Node

siemens simatic_s7-1500_cpu_1512c-1_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1512c-1Match-

Node

siemens simatic_s7-1500_cpu_1512sp-1_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1512sp-1Match-

Node

siemens simatic_s7-1500_cpu_1512spf-1_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1512spf-1Match-

Node

siemens simatic_s7-1500_cpu_1513-1_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1513-1Match-

Node

siemens simatic_s7-1500_cpu_1513f-1_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1513f-1Match-

Node

siemens simatic_s7-1500_cpu_1513r-1_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1513r-1Match-

Node

siemens simatic_s7-1500_cpu_cpu_1513prof-2_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_cpu_1513prof-2Match-

Node

siemens simatic_s7-1500_cpu_cpu_1513pro-2_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_cpu_1513pro-2Match-

Node

siemens simatic_s7-1500_cpu_1515-2_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1515-2Match-

Node

siemens simatic_s7-1500_cpu_1515f-2_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1515f-2Match-

Node

siemens simatic_s7-1500_cpu_1515r-2_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1515r-2Match-

Node

siemens simatic_s7-1500_cpu_1515t-2_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1515t-2Match-

Node

siemens simatic_s7-1500_cpu_1515tf-2_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1515tf-2Match-

Node

siemens simatic_s7-1500_cpu_1516pro_f_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1516pro_fMatch-

Node

siemens simatic_s7-1500_cpu_1516pro-2_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1516pro-2Match-

Node

siemens simatic_s7-1500_cpu_1516-3_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1516-3Match-

Node

siemens simatic_s7-1500_cpu_1516f-3_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1516f-3Match-

Node

siemens simatic_s7-1500_cpu_1516t-3_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1516t-3Match-

Node

siemens simatic_s7-1500_cpu_1516tf-3_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1516tf-3Match-

Node

siemens simatic_s7-1500_cpu_1517-3_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1517-3Match-

Node

siemens simatic_s7-1500_cpu_1517f-3_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1517f-3Match-

Node

siemens simatic_s7-1500_cpu_1517tf-3_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1517tf-3Match-

Node

siemens simatic_s7-1500_cpu_1518-4_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1518-4Match-

Node

siemens simatic_s7-1500_cpu_1518f-4_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1518f-4Match-

Node

siemens simatic_s7-1500_cpu_1518hf-4_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1518hf-4Match-

Node

siemens simatic_s7-1500_cpu_1518t-4_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1518t-4Match-

Node

siemens simatic_s7-1500_cpu_1518tf-4_firmwareRange2.9.2–2.9.4

AND

siemens simatic_s7-1500_cpu_1518tf-4Match-

[
  {
    "vendor": "Siemens",
    "product": "SIMATIC Drive Controller family",
    "versions": [
      {
        "version": "All versions >= V2.9.2 < V2.9.4",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants)",
    "versions": [
      {
        "version": "All versions >= V21.9 < V21.9.4",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIMATIC S7-1200 CPU family (incl. SIPLUS variants)",
    "versions": [
      {
        "version": "All versions >= V4.5.0 < V4.5.2",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants)",
    "versions": [
      {
        "version": "All versions >= V2.9.2 < V2.9.4",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIMATIC S7-1500 Software Controller",
    "versions": [
      {
        "version": "All versions >= V21.9 < V21.9.4",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIMATIC S7-PLCSIM Advanced",
    "versions": [
      {
        "version": "All versions >= V4.0 < V4.0 SP1",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIPLUS TIM 1531 IRC",
    "versions": [
      {
        "version": "All versions < V2.3.6",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "TIM 1531 IRC",
    "versions": [
      {
        "version": "All versions < V2.3.6",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  }
]

Source	Link
cert-portal	www.cert-portal.siemens.com/productcert/pdf/ssa-838121.pdf

17 Jun 2026 04:00Current

7.4High risk

Vulners AI Score7.4

CVSS 27.1

CVSS 3.17.5

EPSS0.01615

SSVC

CWE-401