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Fencer Vulns
medium 4.3

CVE-2026-59693 json

A vulnerability has been identified in Desigo DXR2 (All versions < V01.21.233.16-7862), Desigo PXC3 (All versions < V01.21.233.16-7862), De…

published 2026-08-11 2 mo ago modified 2026-08-28 2 mo ago also EUVD-2026-56121

cvss
4.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 15%
public exploits
0
none known

Summary

A vulnerability has been identified in Desigo DXR2 (All versions < V01.21.233.16-7862), Desigo PXC3 (All versions < V01.21.233.16-7862), Desigo PXC4 (All versions < V02.21.194.36-2715), Desigo PXC5.E003 (All versions < V02.21.194.36-2715), Desigo PXC5.E24 (All versions < V02.21.194.36-2715), Desigo PXC7 (All versions < V02.21.194.36-2715). The affected devices are vulnerable to a denial-of-service (DoS) vulnerability. An attacker can exploit this issue by sending a malformed BACnet packet, causing the device to stop responding to BACnet queries. Recovery requires a device reset or reboot to restore normal functionality.

Patch / fix

  • Siemens Desigo DXR2 V01.21.233.16-7862
  • Siemens Desigo PXC3 V01.21.233.16-7862
  • Siemens Desigo PXC4 V02.21.194.36-2715
  • Siemens Desigo PXC5.E003 V02.21.194.36-2715
  • Siemens Desigo PXC5.E24 V02.21.194.36-2715
  • Siemens Desigo PXC7 V02.21.194.36-2715

Vendor advisories

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

cisa ICSA-26-225-08 updated cvss 4.3

Siemens Desigo DXR and PXC Controllers

  • Siemens Desigo DXR2 < 01.21.233.16-7862 Siemens Desigo PXC3 < 01.21.233.16-7862
    affected: fixed in V01.21.233.16-7862
  • Siemens Desigo PXC4 < 02.21.194.36-2715 Siemens Desigo PXC5.E003 < 02.21.194.36-2715 Siemens Desigo PXC5.E24 < 02.21.194.36-2715 Siemens Desigo PXC7 < 02.21.194.36-2715
    affected: fixed in V02.21.194.36-2715

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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 mo ago

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.3 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CNA 4.0 5.3 CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
CNA 4.0 5.3 CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • Siemens Desigo DXR2
  • Siemens Desigo PXC3
  • Siemens Desigo PXC4
  • Siemens Desigo PXC5.E003
  • Siemens Desigo PXC5.E24
  • Siemens Desigo PXC7

Classification

Weakness
  • CWE-754 Improper Check for Unusual or Exceptional Conditions

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.