CVE-2019-0009
Junos OS: EX2300 and EX3400: High disk I/O operations may disrupt the communication between RE and PFE
- Published
- Updated
- Reserved
- Assigned by
- juniper
Description
On EX2300 and EX3400 series, high disk I/O operations may disrupt the communication between the routing engine (RE) and the packet forwarding engine (PFE). In a virtual chassis (VC) deployment, this issue disrupts communication between the VC members. This issue does not affect other Junos platforms. Affected releases are Junos OS on EX2300 and EX3400 series: 15.1X53 versions prior to 15.1X53-D590; 18.1 versions prior to 18.1R2-S2, 18.1R3; 18.2 versions prior to 18.2R2.
Timeline
ID reserved
By juniper
- 3 months later
· 3 months later
Published
- 6 years later
· 6 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| juniperCNA (assigner) | 3.0 | Medium5.5 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.35% · top 71% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
- DoS
Affected products
- affected 15.1X53 – < 15.1X53-D113, 15.1X53-D590
- affected 18.1 – < 18.1R2-S2, 18.1R3
- affected 18.2 – < 18.2R2
What to do
Solution: The following software releases have been updated to resolve this specific issue: Junos OS 15.1X53-D113, 15.1X53-D590, 18.1R2-S2, 18.1R3, 18.2R2, 18.3R1, and all subsequent releases.
Workaround: Avoid performing operation that may generate high disk I/O. Limiting the access to the device to only trusted administrators from trusted administrative networks or hosts would minimize the risk.
References (2)
- https://kb.juniper.net/JSA10909 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 106548 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2019-0009)Record last updated .