CVE-2025-21593: Junos OS and Junos OS Evolved: On SRv6 enabled devices, an attacker sending a malformed BGP update can cause the rpd to crash
Juniper Networks · Junos OS
Vendor fix available · Affected: Juniper Networks Junos OS · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Percentile not published
DescriptionCVE.org
An Improper Control of a Resource Through its Lifetime vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker to cause a Denial-of-Service (DoS). On devices with SRv6 (Segment Routing over IPv6) enabled, an attacker can send a malformed BGP UPDATE packet which will cause the rpd to crash and restart. Continued receipt of these UPDATE packets will cause a sustained DoS condition. This issue affects iBGP and eBGP, and both IPv4 and IPv6 are affected by this vulnerability.This issue affects Junos OS: * All versions before 21.2R3-S9, * from 21.4 before 21.4R3-S10, * from 22.2 before 22.2R3-S5, * from 22.3 before 22.3R3-S4, * from 22.4 before 22.4R3-S3, * from 23.2 before 23.2R2-S2, * from 23.4 before 23.4R2; and Junos OS Evolved: * All versions before 21.2R3-S9-EVO, * from 21.4-EVO before 21.4R3-S10-EVO, * from 22.2-EVO before 22.2R3-S5-EVO, * from 22.3-EVO before 22.3R3-S4-EVO, * from 22.4-EVO before 22.4R3-S3-EVO, * from 23.2-EVO before 23.2R2-S2-EVO, * from 23.4-EVO before 23.4R2-EVO.
Affected products2
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Juniper Networks · Junos OSbefore 21.2R3-S9; from 21.4 before 21.4R3-S10; from 22.2 before 22.2R3-S5; from 22.3 before 22.3R3-S4; from 22.4 before 22.4R3-S3; from 23.2 before 23.2R2-S2 and 1 more
- Juniper Networks · Junos OS Evolvedbefore 21.2R3-S9-EVO; from 21.4-EVO before 21.4R3-S10-EVO; from 22.2-EVO before 22.2R3-S5-EVO; from 22.3-EVO before 22.3R3-S4-EVO; from 22.4-EVO before 22.4R3-S3-EVO; from 23.2-EVO before 23.2R2-S2-EVO and 1 more
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Juniper Networks
- Published
- January 2025
CoverageNo articles yet
No CyberSIXT article names CVE-2025-21593 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.