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Servers and applications

CVE-2026-107409

Memory corruption in DNS-over-HTTPS (DoH) can lead to unpredictable or erroneous behavior or a Denial of Service in Citrix NetScaler

Severity
Critical 9.3
Published
13 Nov 2026
Last changed
13 Nov 2026
Added to UpHeron
13 Nov 2026
Fixed in
13.1-37.293 FIPs and NDcPP, 13.1-64.39, 14.1-73.57, 14.1-73.58 FIPS
Attack
Over the network · No login needed · No user action needed
Attacker can
Read data · Change data · Take it down
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Sources
CVE Program

Affected software

SoftwareAffected versions
NetScaler ADC and GatewayServers and applications · cna:citrix netscaler|adc
  • Every version before 14.1-73.57
  • Every version before 13.1-64.39
  • Every version before 14.1-73.58 FIPS
  • Every version before 13.1-37.293 FIPs and NDcPP
NetScaler ADC and GatewayServers and applications · cna:citrix netscaler|gateway
  • Every version before 14.1-73.57
  • Every version before 13.1-64.39

References

  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-107409