CVE-2026-101950 Memory corruption in Junos OS
Unauthenticated attackers can crash the packet-forwarding process or potentially execute code via malformed IPv4 packets on SRX devices with Secure Vector Routing enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-101950?
CVE-2026-101950 is a critical memory corruption vulnerability in Juniper Networks Junos OS, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A Heap-based Buffer Overflow vulnerability in the SVR component of Juniper Networks Junos OS on SRX Series allows an unauthenticated network attacker to cause a denial of service and potentially compromise confidentiality and integrity via malformed IPv4 packets reaching an interface configured for Secure Vector Routing.
Weakness: CWE-122
Which versions are affected by CVE-2026-101950?
How do I fix CVE-2026-101950?
No fix has been published for CVE-2026-101950 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-101950 being exploited?
There is no known exploitation of CVE-2026-101950 in the wild and no public exploit code.
Sources
Also known as GHSA-6v87-cfwg-v42j.