CVE-2025-21593
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2025
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Junos OS and Junos OS Evolved: On SRv6 enabled devices, an attacker sending a malformed BGP update can cause the rpd to crash
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Junos OS
- Vendor
- Juniper Networks
- Product
- Junos OS
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0 | affected | semver | 21.2R3-S9 | Unavailable | None listed |
| 21.4 | affected | semver | 21.4R3-S10 | Unavailable | None listed |
| 22.2 | affected | semver | 22.2R3-S5 | Unavailable | None listed |
| 22.3 | affected | semver | 22.3R3-S4 | Unavailable | None listed |
| 22.4 | affected | semver | 22.4R3-S3 | Unavailable | None listed |
| 23.2 | affected | semver | 23.2R2-S2 | Unavailable | None listed |
| 23.4 | affected | semver | 23.4R2 | Unavailable | None listed |
Junos OS Evolved
- Vendor
- Juniper Networks
- Product
- Junos OS Evolved
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0 | affected | semver | 21.2R3-S9-EVO | Unavailable | None listed |
| 21.4-EVO | affected | semver | 21.4R3-S10-EVO | Unavailable | None listed |
| 22.2-EVO | affected | semver | 22.2R3-S5-EVO | Unavailable | None listed |
| 22.3-EVO | affected | semver | 22.3R3-S4-EVO | Unavailable | None listed |
| 22.4-EVO | affected | semver | 22.4R3-S3-EVO | Unavailable | None listed |
| 23.2-EVO | affected | semver | 23.2R2-S2-EVO | Unavailable | None listed |
| 23.4-EVO | affected | semver | 23.4R2-EVO | Unavailable | None listed |