Vulnerability Database

383,304

Total vulnerabilities in the database

CVE-2018-3639 — siemens / itc1500_firmware

Observable Discrepancy

Systems with microprocessors utilizing speculative execution and speculative execution of memory reads before the addresses of all prior memory writes are known may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis, aka Speculative Store Bypass (SSB), Variant 4.

  • Published: May 22, 2018
  • Updated: Sep 13, 2026
  • CVE: CVE-2018-3639
  • Severity: Medium
  • Exploit:
  • CISA KEV:

CVSS v3:

  • Severity: Medium
  • Score: 5.5
  • AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS v2:

  • Severity: Low
  • Score: 2.1
  • AV:L/AC:L/Au:N/C:P/I:N/A:N

CWEs:

Software Affected versions
siemens / itc1500_firmware < 3.1
siemens / itc1500_pro_firmware < 3.1
siemens / itc1900_firmware < 3.1
siemens / itc1900_pro_firmware < 3.1
siemens / itc2200_firmware < 3.1
siemens / itc2200_pro_firmware < 3.1
siemens / simatic_et_200_sp_firmware < 2.6
siemens / simatic_field_pg_m4_firmware < 18.01.09
siemens / simatic_field_pg_m5_firmware < 22.01.06
siemens / simatic_ipc3000_smart_firmware < 1.5
siemens / simatic_ipc347e_firmware < 1.5
siemens / simatic_ipc427d_firmware < 17.0x.14
siemens / simatic_ipc427e_firmware < 21.01.09
siemens / simatic_ipc477d_firmware < 17.0x.14
siemens / simatic_ipc477e_firmware < 21.01.09
siemens / simatic_ipc477e_pro_firmware < 21.01.09
siemens / simatic_ipc547e_firmware < r1.30.0
siemens / simatic_ipc547g_firmware < r1.23.0
siemens / simatic_ipc627c_firmware < 15.02.15
siemens / simatic_ipc627d_firmware < 19.02.11
siemens / simatic_ipc647c_firmware < 15.01.14
siemens / simatic_ipc647d_firmware < 19.01.14
siemens / simatic_ipc677d_firmware < 19.02.11
siemens / simatic_ipc677c_firmware < 15.02.15
siemens / simatic_ipc827c_firmware < 15.02.15
siemens / simatic_ipc827d_firmware < 19.02.11
siemens / simatic_ipc847c_firmware < 15.01.14
siemens / simatic_ipc847d_firmware < 19.01.14
siemens / simatic_itp1000_firmware < 23.01.04
siemens / simatic_s7-1500_firmware < 2.6
siemens / simotion_p320-4e_firmware < 17.0x.14
siemens / sinumerik_pcu_50.5_firmware < 15.02.15
mitel / micloud_management_portal All versions
schneider-electric / struxureware_data_center_expert < 7.6.0
nvidia / jetson_tx2 < r28.3
nvidia / jetson_tx1 < r28.3
intel / atom_c = c2308
intel / atom_c = c3308
intel / atom_c = c3338
intel / atom_c = c3508
intel / atom_c = c3538
intel / atom_c = c3558
intel / atom_c = c3708
intel / atom_c = c3750
intel / atom_c = c3758
intel / atom_c = c3808
intel / atom_c = c3830
intel / atom_c = c3850
intel / atom_c = c3858
intel / atom_c = c3950
intel / atom_c = c3955
intel / atom_c = c3958
intel / atom_e = e3805
intel / atom_e = e3815
intel / atom_e = e3825
intel / atom_e = e3826
intel / atom_e = e3827
intel / atom_e = e3845
intel / atom_z = z2420
intel / atom_z = z2460
intel / atom_z = z2480
intel / atom_z = z2520
intel / atom_z = z2560
intel / atom_z = z2580
intel / atom_z = z2760
intel / atom_z = z3460
intel / atom_z = z3480
intel / atom_z = z3530
intel / atom_z = z3560
intel / atom_z = z3570
intel / atom_z = z3580
intel / atom_z = z3590
intel / atom_z = z3735d
intel / atom_z = z3735e
intel / atom_z = z3735f
intel / atom_z = z3735g
intel / atom_z = z3736f
intel / atom_z = z3736g
intel / atom_z = z3740
intel / atom_z = z3740d
intel / atom_z = z3745
intel / atom_z = z3745d
intel / atom_z = z3770
intel / atom_z = z3770d
intel / atom_z = z3775
intel / atom_z = z3775d
intel / atom_z = z3785
intel / atom_z = z3795
intel / celeron_j = j3455
intel / celeron_j = j4005
intel / celeron_j = j4105
intel / celeron_n = n3450
intel / core_i3 = 32nm
intel / core_i3 = 45nm
intel / core_i5 = 32nm
intel / core_i5 = 45nm
intel / core_i7 = 32nm
intel / core_i7 = 45nm
intel / core_m = 32nm
intel / core_m = 45nm
intel / pentium = n4000
intel / pentium = n4100
intel / pentium = n4200
intel / pentium_j = j4205
intel / pentium_silver = j5005
intel / pentium_silver = n5000
intel / xeon_e3 = 125c_
intel / xeon_e3 = 1220_
intel / xeon_e3 = 1275_
intel / xeon_e3 = 1505m_v6
intel / xeon_e3 = 1515m_v5
intel / xeon_e3 = 1535m_v5
intel / xeon_e3 = 1535m_v6
intel / xeon_e3 = 1545m_v5
intel / xeon_e3 = 1558l_v5
intel / xeon_e3 = 1565l_v5
intel / xeon_e3 = 1575m_v5
intel / xeon_e3 = 1578l_v5
intel / xeon_e3 = 1585_v5
intel / xeon_e3 = 1585l_v5
intel / xeon_e3 = 3600
intel / xeon_e3 = 5600
intel / xeon_e3 = 7500
intel / xeon_e3 = e5502
intel / xeon_e3 = e5503
intel / xeon_e3 = e5504
intel / xeon_e3 = e5506
intel / xeon_e3 = e5507
intel / xeon_e3 = e5520
intel / xeon_e3 = e5530
intel / xeon_e3 = e5540
intel / xeon_e3 = e6510
intel / xeon_e3 = e6540
intel / xeon_e3 = e6550
intel / xeon_e3 = l3403
intel / xeon_e3 = l3406
intel / xeon_e3 = l3426
intel / xeon_e3 = l5506
intel / xeon_e3 = l5508_
intel / xeon_e3 = l5518_
intel / xeon_e3 = l5520
intel / xeon_e3 = l5530
intel / xeon_e3 = w5580
intel / xeon_e3 = w5590
intel / xeon_e3 = x3430
intel / xeon_e3 = x3440
intel / xeon_e3 = x3450
intel / xeon_e3 = x3460
intel / xeon_e3 = x3470
intel / xeon_e3 = x3480
intel / xeon_e3 = x5550
intel / xeon_e3 = x5560
intel / xeon_e3 = x5570
intel / xeon_e5 = 2650l_v4
intel / xeon_e5 = 2658
intel / xeon_e5 = 2658_v2
intel / xeon_e5 = 2658_v3
intel / xeon_e5 = 2658_v4
intel / xeon_e5 = 2658a_v3
intel / xeon_e5 = 2660
intel / xeon_e5 = 2660_v2
intel / xeon_e5 = 2660_v3
intel / xeon_e5 = 2660_v4
intel / xeon_e5 = 2665
intel / xeon_e5 = 2667
intel / xeon_e5 = 2667_v2
intel / xeon_e5 = 2667_v3
intel / xeon_e5 = 2667_v4
intel / xeon_e5 = 2670
intel / xeon_e5 = 2670_v2
intel / xeon_e5 = 2670_v3
intel / xeon_e5 = 2680
intel / xeon_e5 = 2680_v2
intel / xeon_e5 = 2680_v3
intel / xeon_e5 = 2680_v4
intel / xeon_e5 = 2683_v3
intel / xeon_e5 = 2683_v4
intel / xeon_e5 = 2687w
intel / xeon_e5 = 2687w_v2
intel / xeon_e5 = 2687w_v3
intel / xeon_e5 = 2687w_v4
intel / xeon_e5 = 2690
intel / xeon_e5 = 2690_v2
intel / xeon_e5 = 2690_v3
intel / xeon_e5 = 2690_v4
intel / xeon_e5 = 2695_v2
intel / xeon_e5 = 2695_v3
intel / xeon_e5 = 2695_v4
intel / xeon_e5 = 2697_v2
intel / xeon_e5 = 2697_v3
intel / xeon_e5 = 2697_v4
intel / xeon_e5 = 2697a_v4
intel / xeon_e5 = 2698_v3
intel / xeon_e5 = 2698_v4
intel / xeon_e5 = 2699_v3
intel / xeon_e5 = 2699_v4
intel / xeon_e5 = 2699a_v4
intel / xeon_e5 = 2699r_v4
intel / xeon_e5 = 4603
intel / xeon_e5 = 4603_v2
intel / xeon_e5 = 4607
intel / xeon_e5 = 4607_v2
intel / xeon_e5 = 4610
intel / xeon_e5 = 4610_v2
intel / xeon_e5 = 4610_v3
intel / xeon_e5 = 4610_v4
intel / xeon_e5 = 4617
intel / xeon_e5 = 4620
intel / xeon_e5 = 4620_v2
intel / xeon_e5 = 4620_v3
intel / xeon_e5 = 4620_v4
intel / xeon_e5 = 4624l_v2
intel / xeon_e5 = 4627_v2
intel / xeon_e5 = 4627_v3
intel / xeon_e5 = 4627_v4
intel / xeon_e5 = 4628l_v4
intel / xeon_e5 = 4640
intel / xeon_e5 = 4640_v2
intel / xeon_e5 = 4640_v3
intel / xeon_e5 = 4640_v4
intel / xeon_e5 = 4648_v3
intel / xeon_e5 = 4650
intel / xeon_e5 = 4650_v2
intel / xeon_e5 = 4650_v3
intel / xeon_e5 = 4650_v4
intel / xeon_e5 = 4650l
intel / xeon_e5 = 4655_v3
intel / xeon_e5 = 4655_v4
intel / xeon_e5 = 4657l_v2
intel / xeon_e5 = 4660_v3
intel / xeon_e5 = 4660_v4
intel / xeon_e5 = 4667_v3
intel / xeon_e5 = 4667_v4
intel / xeon_e5 = 4669_v3
intel / xeon_e5 = 4669_v4
intel / xeon_e7 = 2803
intel / xeon_e7 = 2820
intel / xeon_e7 = 2830
intel / xeon_e7 = 2850
intel / xeon_e7 = 2850_v2
intel / xeon_e7 = 2860
intel / xeon_e7 = 2870
intel / xeon_e7 = 2870_v2
intel / xeon_e7 = 2880_v2
intel / xeon_e7 = 2890_v2
intel / xeon_e7 = 4807
intel / xeon_e7 = 4809_v2
intel / xeon_e7 = 4809_v3
intel / xeon_e7 = 4809_v4
intel / xeon_e7 = 4820
intel / xeon_e7 = 4820_v2
intel / xeon_e7 = 4820_v3
intel / xeon_e7 = 4820_v4
intel / xeon_e7 = 4830
intel / xeon_e7 = 4830_v2
intel / xeon_e7 = 4830_v3
intel / xeon_e7 = 4830_v4
intel / xeon_e7 = 4850
intel / xeon_e7 = 4850_v2
intel / xeon_e7 = 4850_v3
intel / xeon_e7 = 4850_v4
intel / xeon_e7 = 4860
intel / xeon_e7 = 4860_v2
intel / xeon_e7 = 4870
intel / xeon_e7 = 4870_v2
intel / xeon_e7 = 4880_v2
intel / xeon_e7 = 4890_v2
intel / xeon_e7 = 8830
intel / xeon_e7 = 8837
intel / xeon_e7 = 8850
intel / xeon_e7 = 8850_v2
intel / xeon_e7 = 8857_v2
intel / xeon_e7 = 8860
intel / xeon_e7 = 8860_v3
intel / xeon_e7 = 8860_v4
intel / xeon_e7 = 8867_v3
intel / xeon_e7 = 8867_v4
intel / xeon_e7 = 8867l
intel / xeon_e7 = 8870
intel / xeon_e7 = 8870_v2
intel / xeon_e7 = 8870_v3
intel / xeon_e7 = 8870_v4
intel / xeon_e7 = 8880_v2
intel / xeon_e7 = 8880_v3
intel / xeon_e7 = 8880_v4
intel / xeon_e7 = 8880l_v2
intel / xeon_e7 = 8880l_v3
intel / xeon_e7 = 8890_v2
intel / xeon_e7 = 8890_v3
intel / xeon_e7 = 8890_v4
intel / xeon_e7 = 8891_v2
intel / xeon_e7 = 8891_v3
intel / xeon_e7 = 8891_v4
intel / xeon_e7 = 8893_v2
intel / xeon_e7 = 8893_v3
intel / xeon_e7 = 8893_v4
intel / xeon_e7 = 8894_v4
intel / xeon_gold = 5115
intel / xeon_gold = 85115
intel / xeon_gold = 85118
intel / xeon_gold = 85119t
intel / xeon_gold = 85120
intel / xeon_gold = 85120t
intel / xeon_gold = 85122
intel / xeon_gold = 86126
intel / xeon_gold = 86126f
intel / xeon_gold = 86126t
intel / xeon_gold = 86128
intel / xeon_gold = 86130
intel / xeon_gold = 86130f
intel / xeon_gold = 86130t
intel / xeon_gold = 86132
intel / xeon_gold = 86134
intel / xeon_gold = 86134m
intel / xeon_gold = 86136
intel / xeon_gold = 86138
intel / xeon_gold = 86138f
intel / xeon_gold = 86138t
intel / xeon_gold = 86140
intel / xeon_gold = 86140m
intel / xeon_gold = 86142
intel / xeon_gold = 86142f
intel / xeon_gold = 86142m
intel / xeon_gold = 86144
intel / xeon_gold = 86146
intel / xeon_gold = 86148
intel / xeon_gold = 86148f
intel / xeon_gold = 86150
intel / xeon_gold = 86152
intel / xeon_gold = 86154
intel / xeon_platinum = 8153
intel / xeon_platinum = 8156
intel / xeon_platinum = 8158
intel / xeon_platinum = 8160
intel / xeon_platinum = 8160f
intel / xeon_platinum = 8160m
intel / xeon_platinum = 8160t
intel / xeon_platinum = 8164
intel / xeon_platinum = 8168
intel / xeon_platinum = 8170
intel / xeon_platinum = 8170m
intel / xeon_platinum = 8176
intel / xeon_platinum = 8176f
intel / xeon_platinum = 8176m
intel / xeon_platinum = 8180
intel / xeon_silver = 4108
intel / xeon_silver = 4109t
intel / xeon_silver = 4110
intel / xeon_silver = 4112
intel / xeon_silver = 4114
intel / xeon_silver = 4114t
intel / xeon_silver = 4116
intel / xeon_silver = 4116t
arm / cortex-a = 15
arm / cortex-a = 57
arm / cortex-a = 72
redhat / mrg_realtime = 2.0
redhat / openstack = 7.0
redhat / openstack = 8
redhat / openstack = 9
redhat / openstack = 10
redhat / openstack = 12
redhat / openstack = 13
redhat / virtualization_manager = 4.2
redhat / virtualization_manager = 4.3
redhat / enterprise_linux_desktop = 6.0
redhat / enterprise_linux_desktop = 7.0
redhat / enterprise_linux_eus = 6.7
redhat / enterprise_linux_eus = 7.3
redhat / enterprise_linux_eus = 7.4
redhat / enterprise_linux_eus = 7.5
redhat / enterprise_linux_eus = 7.6
redhat / enterprise_linux_eus = 7.7
redhat / enterprise_linux_server = 6.0
redhat / enterprise_linux_server = 7.0
redhat / enterprise_linux_server_aus = 5.9
redhat / enterprise_linux_server_aus = 6.4
redhat / enterprise_linux_server_aus = 6.5
redhat / enterprise_linux_server_aus = 6.6
redhat / enterprise_linux_server_aus = 7.2
redhat / enterprise_linux_server_aus = 7.3
redhat / enterprise_linux_server_aus = 7.4
redhat / enterprise_linux_server_aus = 7.7
redhat / enterprise_linux_server_tus = 6.6
redhat / enterprise_linux_server_tus = 7.2
redhat / enterprise_linux_server_tus = 7.3
redhat / enterprise_linux_server_tus = 7.4
redhat / enterprise_linux_server_tus = 7.6
redhat / enterprise_linux_server_tus = 7.7
redhat / enterprise_linux_workstation = 6.0
redhat / enterprise_linux_workstation = 7.0
debian / debian_linux = 8.0
debian / debian_linux = 9.0
canonical / ubuntu_linux = 12.04
canonical / ubuntu_linux = 14.04
canonical / ubuntu_linux = 16.04
canonical / ubuntu_linux = 17.10
canonical / ubuntu_linux = 18.04
oracle / local_service_management_system >= 13.0, <= 13.3
oracle / solaris = 11
redhat / virtualization = 4.0
microsoft / surface_book = 2
microsoft / surface_pro = 3
microsoft / surface_pro = 4
microsoft / surface_pro = 1796
microsoft / surface_pro_with_lte_advanced = 1807
microsoft / windows_10 = 1607
microsoft / windows_10 = 1703
microsoft / windows_10 = 1709
microsoft / windows_10 = 1803
microsoft / windows_10 = 1809
microsoft / windows_7 = --sp1
microsoft / windows_server_2008 = r2-sp1
microsoft / windows_server_2008 = sp2
microsoft / windows_server_2012 = r2
microsoft / windows_server_2016 = 1709
microsoft / windows_server_2016 = 1803

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.