5.5

CVE-2022-22240: Junos OS and Junos OS Evolved: An rpd memory leak might be observed while running a specific cli command in a RIB sharding scenario

Modified
Published 18-10-2022Last modified 09-05-2025

Vulnerability summary

CVE-2022-22240 is a medium (CVSS 5.5) vulnerability in juniper networks junos os. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.9% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.21%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 18-10-2022
    PublishedVulnerability first disclosed.
  2. 09-05-2025
    Last modifiedVulnerability information updated.

Description

An Allocation of Resources Without Limits or Throttling and a Missing Release of Memory after Effective Lifetime vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a locally authenticated low privileged attacker to cause a Denial of Sevice (DoS). In a high-scaled BGP routing environment with rib-sharding enabled, two issues may occur when executing a specific CLI command. One is a memory leak issue with rpd where the leak rate is not constant, and the other is a temporary spike in rpd memory usage during command execution. This issue affects: Juniper Networks Junos OS 19.4 versions prior to 19.4R3-S9; 20.2 versions prior to 20.2R3-S5; 20.3 versions prior to 20.3R3-S2; 20.4 versions prior to 20.4R3-S1; 21.1 versions prior to 21.1R3; 21.2 versions prior to 21.2R1-S2, 21.2R2-S1, 21.2R3; 21.3 versions prior to 21.3R2. Juniper Networks Junos OS Evolved All versions prior to 20.4R3-S1-EVO; 21.1-EVO version 21.1R1-EVO and later versions; 21.2-EVO versions prior to 21.2R1-S2-EVO, 21.2R3-EVO; 21.3-EVO versions prior to 21.3R2-EVO. This issue does not affect Juniper Networks Junos OS versions prior to 19.2R1.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.20% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Juniper2 products
  • junos19.4 | 19.4:r1 | 19.4:r1-s1 | 19.4:r1-s2 | 19.4:r1-s3 | 19.4:r1-s4 | 19.4:r2 | 19.4:r2-s1 | 19.4:r2-s2 | 19.4:r2-s3 | 19.4:r2-s4 | 19.4:r2-s5 | 19.4:r2-s6 | 19.4:r3 | 19.4:r3-s1 | 19.4:r3-s2 | 19.4:r3-s3 | 19.4:r3-s4 | 19.4:r3-s5 | 19.4:r3-s6 | 19.4:r3-s7 | 19.4:r3-s8 | 20.2 | 20.2:r1 | 20.2:r1-s1 | 20.2:r1-s2 | 20.2:r1-s3 | 20.2:r2 | 20.2:r2-s1 | 20.2:r2-s2 | 20.2:r2-s3 | 20.2:r3 | 20.2:r3-s1 | 20.2:r3-s2 | 20.2:r3-s3 | 20.2:r3-s4 | 20.3 | 20.3:r1 | 20.3:r1-s1 | 20.3:r1-s2 | 20.3:r2 | 20.3:r2-s1 | 20.3:r3 | 20.3:r3-s1 | 20.4 | 20.4:r1 | 20.4:r1-s1 | 20.4:r2 | 20.4:r2-s1 | 20.4:r2-s2 | 20.4:r3 | 21.1 | 21.1:r1 | 21.1:r1-s1 | 21.1:r2 | 21.1:r2-s1 | 21.1:r2-s2 | 21.2 | 21.2:r1 | 21.2:r1-s1 | 21.2:r2 | 21.3 | 21.3:r1 | 21.3:r1-s1 | 21.3:r1-s2
  • junos_os_evolved< 20.4 | 20.4 | 20.4:r1 | 20.4:r1-s1 | 20.4:r1-s2 | 20.4:r2 | 20.4:r2-s1 | 20.4:r2-s2 | 20.4:r2-s3 | 20.4:r3 | 21.1:r1 | 21.1:r1-s1 | 21.1:r2 | 21.1:r3 | 21.1:r3-s1 | 21.2 | 21.2:r1 | 21.2:r1-s1 | 21.2:r2 | 21.2:r2-s1 | 21.2:r2-s2 | 21.3 | 21.3:r1 | 21.3:r1-s1
Juniper networks2 products
  • junos os≥ 19.4, < 19.4R3-S9 | ≥ 20.2, < 20.2R3-S5 | ≥ 20.3, < 20.3R3-S2 | ≥ 20.4, < 20.4R3-S1 | ≥ 21.1, < 21.1R3 | ≥ 21.2, < 21.2R1-S2, 21.2R2-S1, 21.2R3 | ≥ 21.3, < 21.3R2
  • junos os evolved≥ unspecified, < 20.4R3-S1-EVO | ≥ 21.1R1-EVO, < 21.1-EVO* | ≥ 21.2-EVO, < 21.2R1-S2-EVO, 21.2R3-EVO | ≥ 21.3-EVO, < 21.3R2-EVO

2 vendors · 4 products

References

1 links