CVE-2019-11823

Name: CVE-2019-11823
Creator: NVD / NIST
Published: 2020-05-04T10:15:10.797+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.44%

Last modified Jun 17, 2026

CVE-2019-11823 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. CRLF injection vulnerability in Network Center in Synology Router Manager (SRM) before 1.2.3-8017-2 allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via crafted network traffic.. EPSS estimates a 2.44% chance of exploitation in the next 30 days.

Description

CRLF injection vulnerability in Network Center in Synology Router Manager (SRM) before 1.2.3-8017-2 allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via crafted network traffic.

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

2.44%

82.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Synology	Router Manager	< 1.2.3-8017-2

References

https://www.synology.com/security/advisory/Synology_SA_20_11Vendor Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1051Exploit, Third Party Advisory
https://www.synology.com/security/advisory/Synology_SA_20_11Vendor Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1051Exploit, Third Party Advisory

Timeline

Published: May 4, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-11823?

How severe is CVE-2019-11823?

CVE-2019-11823 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.44% probability of exploitation in the next 30 days.

How do I fix CVE-2019-11823?

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-2019-11823?

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

Scan your code now

Source: NVD / NIST