CVE-2017-1000421

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

2.68% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 85.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

2018-01-02 19:00Z8 YR AGO

Last updated

2024-08-05 22:00Z2 YR AGO

Reserved

2018-01-02

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.1

Document digest

076f2c02432a07e255fe28d72480842e79ef1c73924c9fe4c5c4ff3492fe25de

• lists.debian.org[debian-lts-announce] 20180108 [SECURITY] [DLA 1233-1] gifsicle security updatehttps://lists.debian.org/debian-lts-announce/2018/01/msg00006.htmlmailing-listx_refsource_MLIST
• www.debian.orgDSA-4084https://www.debian.org/security/2018/dsa-4084vendor-advisoryx_refsource_DEBIAN
• github.comhttps://github.com/kohler/gifsicle/issues/114x_refsource_CONFIRM