🛡️ CVE-2026-57024 — junos

🟡 CVSS 5.3 — Medium ✅ No Known Exploit CWE-694 NVD
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A Use of Multiple Resources with Duplicate Identifier vulnerability in the IKE daemon (iked) of Juniper Networks Junos OS on MX with SPC3 and SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).

On an MX with SPC3 and SRX devices configured for VPN service, when a large number of VPN negotiations fail a peer index rollover will eventually occur. As a result, new peers are assigned index values that are already in use and the iked process starts to crash repeatedly. This results in failure to establish new VPN connections and rekeying existing ones. To restore service the system must be rebooted.

Please note that the index value can't be monitored, so customers should monitor tunnel up and down events and if a lot of events occur over an extended period of time it becomes likely that this issue occurs.

To be exposed to this issue the system needs to run iked (vs. kmd which is not affected), which can be verified with:

user@host> show system processes extensive | match "KMD|IKED"

This issue affects Junos OS on MX with SPC3, SRX Series:

  • all versions before 23.2R2-S7,
  • 23.4 versions before 23.4R2-S6,
  • 24.2 versions before 24.2R2-S3,
  • 24.4 versions before 24.4R2-S4,
  • 25.2 versions before 25.2R1-S1.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability low.

Weakness class

CVE-2026-57024 is classified as CWE-694: Use of Multiple Resources with Duplicate Identifier. The product uses multiple resources that can have the same identifier, in a context in which unique identifiers are required.

Affected software

CVE-2026-57024 is recorded against 1 package.

  • junos

Timeline and source

Published on 9 July 2026 and last revised on 14 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

supportportal.juniper.net

Details

Severity MEDIUM
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE CWE-694
Public Exploit ✅ No
Source NVD
Published 2026-07-09
Updated 2026-08-11
Modified 2026-07-14
Fix URL N/A

Affected Packages

Software From version Fixed in
junos — —

References

Similar Threats

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