CVE-2020-28840

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• 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

0.36% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 28.5% 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:L/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

2023-08-11 00:00Z3 YR AGO

Last updated

2024-10-09 18:44Z1 YR AGO

Reserved

2020-11-16

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

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

Data version

5.1

Document digest

27b1fbbc60c122d634e1e27b7516a4ebbcfd4b1bde408353df75ba69e6e184f3

• bugs.launchpad.nethttps://bugs.launchpad.net/ubuntu/+source/jhead/+bug/1900820
• github.comhttps://github.com/Matthias-Wandel/jhead/commit/4827ed31c226dc5ed93603bd649e0e387a1778da
• github.comhttps://github.com/Matthias-Wandel/jhead/issues/8
• github.comhttps://github.com/F-ZhaoYang/jhead/security/advisories/GHSA-xh27-xwgj-gqw2