CVE-2018-7421

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

1.70% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 75.2% 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

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2018-02-23 22:00Z8 YR AGO

Last updated

2024-08-05 06:24Z2 YR AGO

Reserved

2018-02-22

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')Base

Data version

5.1

Document digest

c5677a3e76e91c0ddee527a4fbb75bf53c3773b7f93edd64a45930e37f89e17d

• code.wireshark.orghttps://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=656812ee1f2a8ddfd383b02a066e888f5919e17ax_refsource_CONFIRM
• www.wireshark.orghttps://www.wireshark.org/security/wnpa-sec-2018-06.htmlx_refsource_CONFIRM
• code.wireshark.orghttps://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=e8be5adae469ba563acfad2c2b98673e1afaf901x_refsource_CONFIRM
• bugs.wireshark.orghttps://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14408x_refsource_CONFIRM