CVE-2020-21427

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.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total 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

0.52% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 42.2% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

2023-08-22 00:00Z3 YR AGO

Last updated

2025-05-05 12:50Z1 YR AGO

Reserved

2020-08-13

Assigning CNA

mitre

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base

Data version

5.1

Document digest

25b52289d2f06d7bb2e4de5f5339c2518a0b56f1cb6d23af3347cb89c6cdf90e

• sourceforge.nethttps://sourceforge.net/p/freeimage/bugs/298/
• lists.fedoraproject.orgFEDORA-2023-a8b26b910dhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RUEK2JOVJBQZVNQIIZZO3JFMTVB4R5KS/vendor-advisory
• lists.fedoraproject.orgFEDORA-2023-2840932fa8https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UGOMCRAANNCQYJYPPMGRQWKRZGIP6NME/vendor-advisory
• lists.debian.org[debian-lts-announce] 20231125 [SECURITY] [DLA 3662-1] freeimage security updatehttps://lists.debian.org/debian-lts-announce/2023/11/msg00020.htmlmailing-list
• www.debian.orgDSA-5579https://www.debian.org/security/2023/dsa-5579vendor-advisory