6.5
CVE-2026-18727
- EPSS 0.2%
- Veröffentlicht 12.08.2026 21:13:51
- Zuletzt bearbeitet 25.08.2026 14:41:11
- Erkennungen
LoginOpen-iscsi: open-iscsi: integer underflow in iscsiuio dhcpv6 parsing
A flaw was found in open-iscsi's iscsiuio component. This vulnerability involves an integer underflow and out-of-bounds read during Dynamic Host Configuration Protocol for IPv6 (DHCPv6) packet parsing. Specifically, crafted DHCPv6 Advertise traffic with a short User Datagram Protocol (UDP) length can cause the DHCPv6 payload length to underflow. An unauthenticated attacker on an adjacent network segment can exploit this by sending specially crafted IPv6 UDP traffic while the client is in an active DHCPv6 exchange, leading to a denial of service due to a process crash or service disruption.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Redhat ≫ Enterprise Linux Version 9.0
Redhat ≫ Enterprise Linux Version 10.0
| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.2% | 0.096 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| RedHat | 6.5 | 2.8 | 3.6 |
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
|
CWE-191 Integer Underflow (Wrap or Wraparound)
The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.
https://access.redhat.com/security/cve/CVE-2026-18727
https://bugzilla.redhat.com/show_bug.cgi?id=2462956