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Juniper networks junos os, NULL pointer dereference: 14 records, one defect family

Juniper networks junos os has been reported 14 separate times for the same kind of mistake, CWE-476, between 2018-10-10 and 2026-07-09. 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-476, 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 11, 3 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 2018-10-10 and 2026-07-09, 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-2018-0049CVE-2021-0206CVE-2021-0251CVE-2022-22210CVE-2022-22232CVE-2024-47496CVE-2024-47501CVE-2025-30645CVE-2025-52984CVE-2025-60007CVE-2026-21901CVE-2024-21602CVE-2024-30403CVE-2025-59967
Most of this family was announced at once: 11 of the 14 records arrived in a single group. The other 3 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.

11 recordsCVE-2018-0049, CVE-2021-0206, CVE-2021-0251, CVE-2022-22210, CVE-2022-22232, CVE-2024-47496, CVE-2024-47501, CVE-2025-30645, CVE-2025-52984…
3 recordsCVE-2024-21602, CVE-2024-30403, CVE-2025-59967

What the records offer

All 14 records publish a fixed version.

The earliest was published 2018-10-10 and the latest 2026-07-09. 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-2018-0049Junos OS: Receipt of a specifically crafted malicious MPLS packet leads to a Junos kernel crash.NULL Pointer Dereference
CVE-2021-0206Junos OS: NFX Series, SRX Series: PFE may crash upon receipt of specific packet when SSL Proxy is configured.CWE-476 NULL Pointer Dereference
CVE-2021-0251Junos OS: MX Series with MS-PIC, MS-SPC3, MS-MIC or MS-MPC: The BRAS Subscriber Services service activation portal is…
CVE-2022-22210Junos OS: QFX5000 Series and MX Series: An l2alm crash leading to an FPC crash can be observed in VxLAN scenarioCWE-476 NULL Pointer Dereference
CVE-2022-22232SRX Series: If Unified Threat Management (UTM) Enhanced Content Filtering (CF) is enabled and specific traffic is…CWE-476 NULL Pointer Dereference
CVE-2024-21602Junos OS Evolved: ACX7024, ACX7100-32C and ACX7100-48L: Traffic stops when a specific IPv4 UDP packet is received by…CWE-476 NULL Pointer Dereference
CVE-2024-30403Junos OS Evolved: When MAC learning happens, and an interface gets flapped, the PFE crashesCWE-476 NULL Pointer Dereference
CVE-2024-47496Junos OS: MX Series: The PFE will crash on running specific commandCWE-476 NULL Pointer Dereference
CVE-2024-47501Junos OS: MX304, MX with MPC10/11/LC9600, and EX9200 with EX9200-15C: In a VPLS or Junos Fusion scenario specific show…CWE-476 NULL Pointer Dereference
CVE-2025-30645Junos OS: SRX Series: Transmission of specific control traffic sent out of a DS-Lite tunnel results in flowd crashCWE-476 NULL Pointer Dereference
CVE-2025-52984Junos OS and Junos OS Evolved: When a static route points to a reject next-hop and a gNMI query for this route is…CWE-476 NULL Pointer Dereference
CVE-2025-59967Junos OS Evolved: ACX7024, ACX7024X, ACX7100-32C, ACX7100-48L, ACX7348, ACX7509: When specific valid multicast traffic…CWE-476: NULL Pointer Dereference
CVE-2025-60007Junos OS: A specifically crafted 'show chassis' command causes chassisd to crashCWE-476 NULL Pointer Dereference
CVE-2026-21901Junos OS and Junos OS Evolved: Configuration of a specific SSH option results in mgd crashCWE-476 NULL Pointer Dereference

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.