CVE-2018-17958

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

6.17% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 92.8% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/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

Moderate. 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

2018-10-09 22:00Z7 YR AGO

Last updated

2026-04-28 15:48Z4 MO AGO

Reserved

2018-10-03

Assigning CNA

mitre

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

• CWE-190Integer Overflow or WraparoundBase
• CWE-121Stack-based Buffer OverflowVariant

Data version

5.2

Document digest

7cd4e369b1e41ab8efa56386782cc8f07404d766cb0db380e16ff8667ad1ee8b

• www.openwall.com[oss-security] 20181008 Qemu: integer overflow issueshttp://www.openwall.com/lists/oss-security/2018/10/08/1mailing-listx_refsource_MLIST
• lists.gnu.org[qemu-devel] 20180926 [PULL 22/25] rtl8139: fix possible out of bound accesshttps://lists.gnu.org/archive/html/qemu-devel/2018-09/msg03269.htmlmailing-listx_refsource_MLIST
• www.securityfocus.com105556http://www.securityfocus.com/bid/105556vdb-entryx_refsource_BID
• lists.debian.org[debian-lts-announce] 20190129 [SECURITY] [DLA 1646-1] qemu security updatehttps://lists.debian.org/debian-lts-announce/2019/01/msg00023.htmlmailing-listx_refsource_MLIST
• usn.ubuntu.comUSN-3826-1https://usn.ubuntu.com/3826-1/vendor-advisoryx_refsource_UBUNTU
• 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
• access.redhat.comRHSA-2019:2425https://access.redhat.com/errata/RHSA-2019:2425vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2019:2553https://access.redhat.com/errata/RHSA-2019:2553vendor-advisoryx_refsource_REDHAT