CVE-2020-35488

Name: CVE-2020-35488
Creator: NVD / NIST
Published: 2021-01-05T15:15:13.797+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 7.60%

Last modified Jun 17, 2026

CVE-2020-35488 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The fileop module of the NXLog service in NXLog Community Edition 2.10.2150 allows remote attackers to cause a denial of service (daemon crash) via a crafted Syslog payload to the Syslog service. This attack requires a specific configuration. EPSS estimates a 7.60% chance of exploitation in the next 30 days.

Description

The fileop module of the NXLog service in NXLog Community Edition 2.10.2150 allows remote attackers to cause a denial of service (daemon crash) via a crafted Syslog payload to the Syslog service. This attack requires a specific configuration. Also, the name of the directory created must use a Syslog field. (For example, on Linux it is not possible to create a .. directory. On Windows, it is not possible to create a CON directory.)

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

7.60%

93.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-502

Affected Software

Vendor	Product	Versions
Nxlog	Nxlog	< 3.0.2272

References

https://github.com/GuillaumePetit84/CVE-2020-35488Exploit, Mitigation, Third Party Advisory
https://gitlab.com/nxlog-public/nxlog-ce/-/blob/master/ChangeLog.txt#L2Release Notes, Third Party Advisory
https://github.com/GuillaumePetit84/CVE-2020-35488Exploit, Mitigation, Third Party Advisory
https://gitlab.com/nxlog-public/nxlog-ce/-/blob/master/ChangeLog.txt#L2Release Notes, Third Party Advisory

Timeline

Published: Jan 5, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-35488?

How severe is CVE-2020-35488?

CVE-2020-35488 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 7.60% probability of exploitation in the next 30 days.

How do I fix CVE-2020-35488?

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-2020-35488?

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

Scan your code now

Source: NVD / NIST