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Fencer Vulns
critical 9.8

CVE-2020-10038 json

A vulnerability has been identified in SICAM MMU (All versions < V2.05), SICAM SGU (All versions), SICAM T (All versions < V2.18).

published 2020-07-14 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-2503

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 69%
public exploits
0
none known

Summary

A vulnerability has been identified in SICAM MMU (All versions < V2.05), SICAM SGU (All versions), SICAM T (All versions < V2.18). An attacker with access to the device's web server might be able to execute administrative commands without authentication.

Patch / fix

  • siemens sicam_mmu_firmware 2.05
  • siemens sicam_t_firmware 2.18

Vendor advisories

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

cisa ICSA-20-196-03 updated cvss 9.8

Siemens SICAM MMU, SICAM T, and SICAM SGU

  • Siemens SICAM MMU <V2.05
    affected: fixed in V2.05, mitigation
  • Siemens SICAM SGU
    affected: mitigation
  • Siemens SICAM T <V2.18
    affected: fixed in V2.18, 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

1.23% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • Siemens AG SICAM MMU
  • Siemens AG SICAM SGU
  • Siemens AG SICAM T

Classification

Weakness
  • CWE-306 Missing Authentication for Critical Functionality

References

Sources

Fencer Vulns 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.