CVE-2023-22417

Name: CVE-2023-22417
Creator: NVD / NIST
Published: 2023-01-13T00:15:11.83+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.64%

Last modified Jun 17, 2026

CVE-2023-22417 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A Missing Release of Memory after Effective Lifetime vulnerability in the Flow Processing Daemon (flowd) of Juniper Networks Junos OS allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS). In an IPsec VPN environment, a memory leak will be seen if a DH or ECDH group is configured. EPSS estimates a 0.64% chance of exploitation in the next 30 days.

Description

A Missing Release of Memory after Effective Lifetime vulnerability in the Flow Processing Daemon (flowd) of Juniper Networks Junos OS allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS). In an IPsec VPN environment, a memory leak will be seen if a DH or ECDH group is configured. Eventually the flowd process will crash and restart. This issue affects Juniper Networks Junos OS on SRX Series: All versions prior to 19.3R3-S7; 19.4 versions prior to 19.4R2-S8, 19.4R3-S10; 20.2 versions prior to 20.2R3-S6; 20.3 versions prior to 20.3R3-S5; 20.4 versions prior to 20.4R3-S5; 21.1 versions prior to 21.1R3-S4; 21.2 versions prior to 21.2R3; 21.3 versions prior to 21.3R3; 21.4 versions prior to 21.4R2.

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

0.64%

46.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Juniper	Junos	19.3
Juniper	Junos	19.4
Juniper	Junos	20.2
Juniper	Junos	20.3
Juniper	Junos	20.4
Juniper	Junos	21.1
Juniper	Junos	21.2
Juniper	Junos	21.3
Juniper	Junos	21.4

References

https://kb.juniper.net/JSA70213Vendor Advisory
https://kb.juniper.net/JSA70213Vendor Advisory

Timeline

Published: Jan 13, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-22417?

How severe is CVE-2023-22417?

CVE-2023-22417 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.64% probability of exploitation in the next 30 days.

How do I fix CVE-2023-22417?

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-2023-22417?

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

Scan your code now

Source: NVD / NIST