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Fencer Intel
high 7.6

CVE-2026-115484 json

Open-iscsi: open-iscsi: dhcpv4 option parser heap out-of-bounds read in iscsiuio parse_msg

published 18d ago modified 4d ago also EUVD-2026-108555

cvss
7.6
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 12%
public exploits
0
none known

Summary

A flaw was found in the iscsiuio component of open-iscsi. The DHCPv4 option parser incorrectly calculates the length of the options data, causing it to read beyond the allocated buffer into adjacent heap memory. An attacker on the same network segment can send a crafted DHCP response to crash the daemon or corrupt its network configuration.

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Vendor advisories

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

red hat product security vex CVE-2026-115484 updated cvss 7.6

open-iscsi: open-iscsi: DHCPv4 option parser heap out-of-bounds read in iscsiuio parse_msg

  • Red Hat Enterprise Linux 7 iscsi-initiator-utils-iscsiuio, iscsi-initiator-utils 6.2.1.11-1.git4b3e853.el10_2.2 Red Hat Enterprise Linux 8 iscsi-initiator-utils, python3-iscsi-initiator-utils, iscsi-initiator-utils-iscsiuio, iscsi-initiator-utils 6.2.1.11-1.git4b3e853.el10_2.2 Red Hat Enterprise Linux 9 iscsi-initiator-utils, python3-iscsi-initiator-utils, iscsi-initiator-utils-iscsiuio, iscsi-initiator-utils 6.2.1.11-1.git4b3e853.el10_2.2 Red Hat Enterprise Linux 10 iscsi-initiator-utils 6.2.1.11-1.git4b3e853.el10_2.2
    affected: workaround, no fix available
  • Red Hat Enterprise Linux 6 iscsi-initiator-utils 6.2.1.11-1.git4b3e853.el10_2.2
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
11d ago

Exploit prediction

0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 7.6 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9

Classification

Weakness

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.