CVE-2023-28967Junos OS and Junos OS Evolved: An attacker sending genuine BGP packets causes an RPD crash
- 7.5HighCVSS base score
- 0.62%Exploitation in 30 daysEPSS · top 50% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A Use of Uninitialized Resource vulnerability in the Border Gateway Protocol (BGP) software of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker to send specific genuine BGP packets to a device configured with BGP to cause a Denial of Service (DoS) by crashing the Routing Protocol Daemon (rpd). This issue is triggered when the packets attempt to initiate a BGP connection before a BGP session is successfully established. Continued receipt of these specific BGP packets will cause a sustained Denial of Service condition. This issue is triggerable in both iBGP and eBGP deployments. This issue affects: Juniper Networks Junos OS 21.1 version 21.1R1 and later versions prior to 21.1R3-S5; 21.2 version 21.2R1 and later versions prior to 21.2R3-S2; 21.3 version 21.3R1 and later versions prior to 21.3R3-S2; 21.4 versions prior to 21.4R3; 22.1 versions prior to 22.1R3; 22.2 versions prior to 22.2R2. This issue does not affect Juniper Networks Junos OS versions prior to 21.1R1. This issue affects: Juniper Networks Junos OS Evolved 21.1-EVO version 21.1R1-EVO and later versions prior to 21.4R3-EVO; 22.1-EVO versions prior to 22.1R3-EVO; 22.2-EVO versions prior to 22.2R2-EVO. This issue does not affect Juniper Networks Junos OS Evolved versions prior to 21.1R1-EVO.
Timeline
ID reserved
By juniper
- 19 days later
· 19 days later
Published
- 22 months later
· 22 months 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) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.62% · top 50% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
- unaffected unspecified – < 21.1R1
- affected 21.1R1 – < 21.1*
- affected 21.2R1 – < 21.2*
- affected 21.3R1 – < 21.3*
- affected 21.4 – < 21.4R3
- affected 22.1 – < 22.1R3
- affected 22.2 – < 22.2R2
Juniper Networks · Junos OS Evolved
- unaffected unspecified – < 21.1R1-EVO
- affected 21.1R1-EVO – < 21.1-EVO*
- affected 21.4-EVO – < 21.4R3-EVO
- affected 22.1-EVO – < 22.1R3-EVO
- affected 22.2-EVO – < 22.2R2-EVO
What to do
Solution: The following software releases have been updated to resolve this specific issue: Junos OS: 21.1R3-S5, 21.2R3-S2, 21.3R3-S2, 21.4R3, 22.1R3, 22.2R2, 22.3R1, and all subsequent releases. Junos OS Evolved: 21.4R3-EVO, 22.1R3-EVO, 22.2R2-EVO, 22.3R1-EVO, and all subsequent releases.
Workaround: There are no known workarounds for this issue. To reduce the risk of exploitation utilize common security BCPs to limit the exploitable surface by disallowing access to all BGP services on networks and devices to only trusted systems, administrators, networks and hosts.
Exploitation: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
References
References1
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)
- EUVD EUVD-2023-32585 (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://cveledger.app/cve/CVE-2023-28967)Record last updated .