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Fencer Intel
high 8.1

CVE-2020-10039 json

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

published 6y ago modified 4mo ago also EUVD-2020-2504

cvss
8.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 44%
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 in a privileged network position between a legitimate user and the web server might be able to conduct a Man-in-the-middle attack and gain read and write access to the transmitted data.

Patch / fix

  • siemens sicam_mmu_firmware 2.05
  • siemens sicam_t_firmware 2.18

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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 7.5

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

0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/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-311 Missing Encryption of Sensitive Data

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.