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CVE-2024-21602

20
FAUCET Score

CVE-2024-21602 is a NULL Pointer Dereference vulnerability in Juniper Networks Junos OS Evolved, specifically impacting ACX7024, ACX7100-32C, and ACX7100-48L devices. An unauthenticated, network-based attacker can trigger a Denial of Service (DoS) by sending a specially crafted IPv4 UDP packet, causing the Routing Engine to crash and restart, leading to momentary or sustained traffic interruptions. This vulnerability is rated High severity with a CVSS score of 7.5, indicating it can be exploited remotely with low attack complexity to achieve high availability impact. Currently, there is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 21.4-EVO, < 21.4R3-S6-EVOCPE match
cpe:2.3:o:juniper:junos_os_evolved:*:r1:*:*:*:*:*:*
>= 22.1-EVO, < 22.1R3-S5-EVOCPE match
cpe:2.3:o:juniper:junos_os_evolved:*:r1:*:*:*:*:*:*
>= 22.3-EVO, < 22.3R2-EVOCPE match
cpe:2.3:o:juniper:junos_os_evolved:*:r1:*:*:*:*:*:*
21.4CPE matchmatch criteria
cpe:2.3:o:juniper:junos_os_evolved:21.4:-:*:*:*:*:*:*
21.4CPE matchmatch criteria
cpe:2.3:o:juniper:junos_os_evolved:21.4:r1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.53%
Probability of exploitation in next 30 days
EPSS Percentile
41.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0053 is in the 19th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

supportportal.juniper.net / JSA75743
Vendor Advisory
first.org / cvss/calculator/4.0
Third Party Advisory