CVE-2026-55995

EUVD-2026-50330
A Double Free vulnerability in open-iscsi allows an unauthenticated MITM attacker to cause DoS.






This issue affects open-iscsi: from ? through 56718d4e9d1a4f51c30697b5c0534144bb41c9bb.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.7 HIGH
NETWORK
LOW
NONE
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 16.57%
Debian logo
Debian Releases
Debian Product
Codename
open-isns
bookworm
postponed
bullseye
postponed
forky
0.103-2
fixed
sid
0.103-2
fixed
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
open-iscsi
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
resolute
needs-triage
stonking
needs-triage
trusty
needs-triage
xenial
needs-triage
open-isns
bionic
Fixed in 0.97-2ubuntu0.1~esm1
released
focal
Fixed in 0.97-3ubuntu0.1~esm1
released
jammy
Fixed in 0.101-0ubuntu2.1
released
noble
Fixed in 0.101-0.3ubuntu0.1
released
resolute
Fixed in 0.101-2.1ubuntu0.1
released
stonking
not-affected
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
isns-utils
RHEL 8
0:0.99-1.el8_10.1
fixed
RHEL 8.4 AUS
0:0.99-1.el8_4.1
fixed
RHEL 8.6 AUS
0:0.99-1.el8_6.1
fixed
RHEL 8.8 E4S
0:0.99-1.el8_8.1
fixed
RHEL 8.8 TUS
0:0.99-1.el8_8.1
fixed
RHEL 9
0:0.101-4.el9_8.1
fixed
isns-utils-devel
RHEL 8
0:0.99-1.el8_10.1
fixed
RHEL 8.4 AUS
0:0.99-1.el8_4.1
fixed
RHEL 8.6 AUS
0:0.99-1.el8_6.1
fixed
RHEL 8.8 E4S
0:0.99-1.el8_8.1
fixed
RHEL 8.8 TUS
0:0.99-1.el8_8.1
fixed
isns-utils-libs
RHEL 8
0:0.99-1.el8_10.1
fixed
RHEL 8.4 AUS
0:0.99-1.el8_4.1
fixed
RHEL 8.6 AUS
0:0.99-1.el8_6.1
fixed
RHEL 8.8 E4S
0:0.99-1.el8_8.1
fixed
RHEL 8.8 TUS
0:0.99-1.el8_8.1
fixed
RHEL 9
0:0.101-4.el9_8.1
fixed
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
iscsi-initiator-utils
Amazon Linux 2
0:6.2.0.874-7.amzn2.0.1
fixed
iscsi-initiator-utils-debuginfo
Amazon Linux 2
0:6.2.0.874-7.amzn2.0.1
fixed
iscsi-initiator-utils-devel
Amazon Linux 2
0:6.2.0.874-7.amzn2.0.1
fixed
iscsi-initiator-utils-iscsiuio
Amazon Linux 2
0:6.2.0.874-7.amzn2.0.1
fixed
isns-utils
Amazon Linux 2
0:0.93-7.amzn2.0.3
fixed
Amazon Linux 2023
0:0.101-6.amzn2023.0.1
fixed
isns-utils-debuginfo
Amazon Linux 2
0:0.93-7.amzn2.0.3
fixed
Amazon Linux 2023
0:0.101-6.amzn2023.0.1
fixed
isns-utils-debugsource
Amazon Linux 2023
0:0.101-6.amzn2023.0.1
fixed
isns-utils-devel
Amazon Linux 2023
0:0.101-6.amzn2023.0.1
fixed
isns-utils-libs
Amazon Linux 2023
0:0.101-6.amzn2023.0.1
fixed
isns-utils-libs-debuginfo
Amazon Linux 2023
0:0.101-6.amzn2023.0.1
fixed
Azure Linux logo
Azure Linux Releases
Azure Package
Release
isns-utils
Azure Linux 3.0
0:0.102-2.azl3
fixed
Common Weakness Enumeration
References
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-55995
https://github.com/open-iscsi/open-isns/commit/56718d4e9d1a4f51c30697b5c0534144bb41c9bb