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Fencer Intel
medium 6.7

CVE-2018-3657 json

Multiple buffer overflows in Intel AMT in Intel CSME firmware versions before version 12.0.5 may allow a privileged user to potentially exe…

published 2018-09-12 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-15511

cvss
6.7
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits
0
none known

Summary

Multiple buffer overflows in Intel AMT in Intel CSME firmware versions before version 12.0.5 may allow a privileged user to potentially execute arbitrary code with Intel AMT execution privilege via local access.

Patch / fix

  • intel converged_security_management_engine_firmware 12.0.5
  • siemens simatic_field_pg_m5_firmware 22.01.06
  • siemens simatic_ipc427e_firmware 21.01.09
  • siemens simatic_ipc477e_firmware 21.01.09
  • siemens simatic_ipc547e_firmware r1.30.0
  • siemens simatic_pc547g_firmware r1.23.0
  • siemens simatic_ipc627d_firmware 19.02.11
  • siemens simatic_ipc647d_firmware 19.01.14
  • siemens simatic_ipc677d_firmware 19.02.11
  • siemens simatic_ipc827d_firmware 19.02.11
  • siemens simatic_ipc847d_firmware 19.01.14
  • siemens simatic_itp1000_firmware 23.01.04
  • intel active_management_technology_firmware 12.0.5
  • intel manageability_engine_firmware 11.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-19-043-05 updated cvss 6.7

Siemens Intel Active Management Technology of SIMATIC IPCs

  • Siemens SIMATIC FieldPG M5 <V22.01.06
    affected: fixed in V22.01.06, mitigation
  • Siemens SIMATIC IPC427E (incl. SIPLUS variants) <V21.01.09 Siemens SIMATIC IPC477E <V21.01.09
    affected: fixed in V21.01.09, mitigation
  • Siemens SIMATIC IPC547E <R1.30.0 Siemens SIMATIC IPC547G <R1.23.0
    affected: vendor fix, mitigation
  • Siemens SIMATIC IPC627D <V19.02.11
    affected: fixed in V19.02.11, mitigation
  • Siemens SIMATIC IPC647D <V19.01.14
    affected: fixed in V19.01.14, mitigation
  • Siemens SIMATIC IPC677D <V19.02.11 Siemens SIMATIC IPC827D <V19.02.11
    affected: fixed in V19.02.11, mitigation
  • Siemens SIMATIC IPC847D <V19.01.14
    affected: fixed in V19.01.14, mitigation
  • Siemens SIMATIC ITP1000 <V23.01.04
    affected: fixed in V23.01.04, mitigation

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Exploit prediction

0.59% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected products

  • Intel Corporation Intel(R) Active Management Technology

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.