CVE-2020-8859

Name: CVE-2020-8859
Creator: NVD / NIST
Published: 2020-03-23T21:15:12.283+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 3.49%

Last modified Jun 17, 2026

CVE-2020-8859 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of ELOG Electronic Logbook 3.1.4-283534d. Authentication is not required to exploit this vulnerability. EPSS estimates a 3.49% chance of exploitation in the next 30 days.

Description

This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of ELOG Electronic Logbook 3.1.4-283534d. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of HTTP parameters. A crafted request can trigger the dereference of a null pointer. An attacker can leverage this vulnerability to create a denial-of-service condition. Was ZDI-CAN-10115.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

3.49%

87.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Psi	Electronic Logbook	3.1.4-283534d

References

https://elog.psi.ch/elogs/Forum/69114Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-252/Third Party Advisory, VDB Entry
https://elog.psi.ch/elogs/Forum/69114Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-252/Third Party Advisory, VDB Entry

Timeline

Published: Mar 23, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-8859?

How severe is CVE-2020-8859?

CVE-2020-8859 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.49% probability of exploitation in the next 30 days.

How do I fix CVE-2020-8859?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-8859?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST