CVE-2024-39535
HIGH EPSS 24.5%
Published Jul 11, 20241y ago · Modified Jun 17, 20262w ago
7.1 CVSS 4.0
Published Jul 11, 2024 1y ago
Last Modified Jun 17, 2026 2w ago
Description
An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on ACX 7000 Series allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS). When a device has a Layer 3 or an IRB interface configured in a VPLS instance and specific traffic is received, the evo-pfemand processes crashes which causes a service outage for the respective FPC until the system is recovered manually. This issue only affects Junos OS Evolved 22.4R2-S1 and 22.4R2-S2 releases and is fixed in 22.4R3. No other releases are affected.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Adjacent
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
24.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-754
Affected Products 8
References 1
- supportportal.juniper.net https://supportportal.juniper.net/JSA82995
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.