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Juniper networks junos os, use after free: 14 records, one defect family

Juniper networks junos os has been reported 14 separate times for the same kind of mistake, CWE-416, between 2018-01-10 and 2026-01-15. A defect family is our own grouping of the CVE corpus: every record naming one product and one weakness class, collected so a repeat is visible as a repeat. No public source publishes this, and what this page counts is how often this one product has gone wrong in this one way.

What this page is, and what it is not

The records are public. This grouping is not, and this one took more than a lookup. Every record here carries CWE-416, which matches exactly. The product name does not: the authorities wrote it 2 different ways, and no text match joins those strings, so a search for any one spelling finds a fraction of what exists and gives no sign the rest is there. Our own embedding, pro@dim2000, read those 2 groups, of 12, 2 records, and found they name one product. That is how 14 records no public source connects came to be on one page, and it is the part you cannot look up. Every spelling stays printed beside its own records, because a judgement you cannot inspect is a judgement you should not cite, and if one of them is a different product this family is wrong and its count is wrong with it.

One record is an incident. 14 filings, between 2018-01-10 and 2026-01-15, all landing on the same weakness class in the same product, is a habit in what gets reported here, and a habit is something you can plan around. This is what we held on 2026-09-20.

A repeat is evidence about where to look. If you are reviewing Juniper networks junos os, the records below say which mistake has already been found more than once, which is the cheapest place a reviewer can start. If you are asking the vendor a question, a count under one weakness class is a better question than any single record is.

What this page cannot tell you is decided by what was joined. A product name and a weakness class settled membership, so those two values are the whole of what the page asserts. Records here may sit in the same line of code or in unrelated parts of the product, and we hold no value that separates those cases. A fixed version named in one record closes that record and says nothing about the others. And nothing here describes anyone's systems, because no value in this family connects a product name to an installation.

CVE-2018-0001CVE-2020-1602CVE-2021-0262CVE-2022-22207CVE-2022-22208CVE-2023-28980CVE-2024-30378CVE-2024-30386CVE-2024-39528CVE-2025-52946CVE-2026-21908CVE-2026-21921CVE-2023-22402CVE-2023-36833
Most of this family was announced at once: 12 of the 14 records arrived in a single group. The other 2 records arrived in 1 a separate group, each with its own dates.

The names the authorities used

2 different ways, each written by whoever filed the records under it. They are printed as written rather than tidied, because the tidying is the step that would hide what was merged.

juniper networks junos os
juniper networks junos os evolved

Family membership: computed, pro@dim2000

What pulled them together

These records reached one family from 2 separate groups. A join on the product name alone could not see they were the same, because the authorities wrote the product and its versions differently each time. The grouping was computed by pro@dim2000.

12 recordsCVE-2018-0001, CVE-2020-1602, CVE-2021-0262, CVE-2022-22207, CVE-2022-22208, CVE-2023-28980, CVE-2024-30378, CVE-2024-30386, CVE-2024-39528…
2 recordsCVE-2023-22402, CVE-2023-36833

What the records offer

All 14 records publish a fixed version.

The earliest was published 2018-01-10 and the latest 2026-01-15. That span is how long this product kept producing this weakness, not how long any one record took to fix.

What this page does not cover

This is a family of records that read alike. It is not a shared vulnerability, not an inventory, and not a statement that one fix closes the rest. Each record's own state, its own dates and its own receipts are on its own page.

Grouped by shared product and weakness, not by shared vulnerability. Each record's own state is on its own page.

Everything this vendor has, including records outside this family:

CVE-2018-0001Junos: Unauthenticated Remote Code Execution through J-Web interface
CVE-2020-1602Junos OS and Junos OS Evolved: A vulnerability in JDHCPD allows an attacker to send crafted IPv4 packets may take over…Denial of Service
CVE-2021-0262Junos OS: QFX10002-60C: Use after free vulnerability found during static code analysisCWE-416 Use After Free
CVE-2022-22207Junos OS: MX Series with MPC11: In a GNF / node slicing scenario gathering AF interface statistics can lead to a kernel…CWE-416 Use After Free
CVE-2022-22208Junos OS and Junos OS Evolved: An rpd crash can occur due to memory corruption caused by flapping BGP sessionsCWE-416 Use After Free
CVE-2023-22402Junos OS Evolved: The kernel might restart in a BGP scenario where "bgp auto-discovery" is enabled and such a neighbor…CWE-416 Use After Free
CVE-2023-28980Junos OS and Junos OS Evolved: In a BGP rib sharding scenario an rpd crash will happen shortly after a specific CLI…CWE-416 Use After Free
CVE-2023-36833Junos OS Evolved: PTX10001-36MR, and PTX10004, PTX10008, PTX10016 with LC1201/1202: The aftman-bt process will crash in…CWE-416 Use After Free
CVE-2024-30378Junos OS: MX Series: bbe-smgd process crash upon execution of specific CLI commandsCWE-416 Use After Free
CVE-2024-30386Junos OS and Junos OS Evolved: In a EVPN-VXLAN scenario state changes on adjacent systems can cause an l2ald process…CWE-416 Use After Free
CVE-2024-39528Junos OS and Junos OS Evolved: Concurrent deletion of a routing-instance and receipt of an SNMP request cause an RPD…CWE-416 Use After Free
CVE-2025-52946Junos OS and Junos OS Evolved: With traceoptions enabled, receipt of malformed AS PATH causes RPD crashCWE-416 Use After Free
CVE-2026-21908Junos OS and Junos OS Evolved: Use after free vulnerability In 802.1X authentication daemon can cause crash of the…CWE-416 Use After Free
CVE-2026-21921Junos OS and Junos OS Evolved: When telemetry collectors are frequently subscribing and unsubscribing to sensors…CWE-416 Use After Free

14 records, read from the index as it stood on 20 Sep 2026. Every row opens the record it names, and every value on that record opens its own receipt.

Everything on this page is free. Public data. Withholding it protects nothing.