CVE-2018-18954

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.51% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 43.6% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Low. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2018-11-15 20:00Z7 YR AGO

Last updated

2024-08-05 11:23Z2 YR AGO

Reserved

2018-11-05

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-125Out-of-bounds ReadBase
• CWE-787Out-of-bounds WriteBase
• CWE-121Stack-based Buffer OverflowVariant

Data version

5.1

Document digest

12d4b032b5f5caef0985c0f21d77ad12b69d42f61532c1c856576f2577157079

• usn.ubuntu.comUSN-3826-1https://usn.ubuntu.com/3826-1/vendor-advisoryx_refsource_UBUNTU
• www.openwall.com[oss-security] 20181107 CVE-2018-18954 QEMU: ppc64: Out-of-bounds r/w stack access in pnv_lpc_do_eccbhttp://www.openwall.com/lists/oss-security/2018/11/06/6mailing-listx_refsource_MLIST
• www.securityfocus.com105920http://www.securityfocus.com/bid/105920vdb-entryx_refsource_BID
• lists.gnu.org[Qemu-devel] 20181103 [PATCH v2] ppc/pnv: check size before data buffer accesshttps://lists.gnu.org/archive/html/qemu-devel/2018-11/msg00446.htmlmailing-listx_refsource_MLIST
• lists.opensuse.orgopenSUSE-SU-2019:1074http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00042.htmlvendor-advisoryx_refsource_SUSE
• www.debian.orgDSA-4454https://www.debian.org/security/2019/dsa-4454vendor-advisoryx_refsource_DEBIAN
• seclists.org20190531 [SECURITY] [DSA 4454-1] qemu security updatehttps://seclists.org/bugtraq/2019/May/76mailing-listx_refsource_BUGTRAQ