CVE-2024-39548: high-severity vulnerability in Juniper Networks Junos OS Evolved
Junos OS Evolved: Receipt of specific packets in the aftmand process will lead to a memory leak
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.5%
An Uncontrolled Resource Consumption vulnerability in the aftmand process of Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to consume memory resources, resulting in a Denial of Service (DoS) condition. The processes do not recover on their own and must be manually restarted.
This issue affects both IPv4 and IPv6.
Changes in memory usage can be monitored using the following CLI command:
user@device> show system memory node <fpc slot> | grep evo-aftmann
This issue affects Junos OS Evolved:
* All versions before 21.2R3-S8-EVO,
* 21.3 versions before 21.3R3-S5-EVO,
* 21.4 versions before 21.4R3-S5-EVO,
* 22.1 versions before 22.1R3-S4-EVO,
* 22.2 versions before 22.2R3-S4-EVO,
* 22.3 versions before 22.3R3-S3-EVO,
* 22.4 versions before 22.4R2-S2-EVO, 22.4R3-EVO,
* 23.2 versions before 23.2R1-S1-EVO, 23.2R2-EVO.
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/R:U
Affected products
Juniper Networks · Junos OS EvolvedRelated CVEs — Juniper Networks Junos OS Evolved
In the same product, most dangerous first.
CVE-2026-21902CRITICALJunos OS Evolved: PTX Series: A vulnerability allows a unauthenticated, network-based attacker to execute code as rootEPSS 18.5%CVE-2026-101967CRITICALJunos OS Evolved: PTX Series: An attacker controlled DHCP response causes root-level compromise when zero-touch provisioning is usedEPSS 3.9%CVE-2026-101978HIGHJunos OS Evolved: PTX Series: An attacker controlled gRPC response causes root-level compromise when zero-touch provisioning is usedEPSS 3.9%CVE-2026-102059HIGHJunos OS and Junos OS Evolved: EX Series, SRX Series, QFX Series: A rogue DHCP server causes root-level command execution when the phone-home client processes specific informationEPSS 3.9%CVE-2026-102031CRITICALJunos OS Evolved: A low-privileged TACACS+ user causes root command execution when authorization refresh is enabledEPSS 2.1%CVE-2023-28983HIGHJunos OS Evolved: Shell Injection vulnerability in the gNOI serverEPSS 1.5%