CVE-2026-101973 Junos OS: Malformed packet causes pkid denial of service when certificate re-enrollment is used
Unauthenticated remote attackers can cause denial of service via malformed packets during certificate re-enrollment in Junos OS.
- 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-2026-101973?
CVE-2026-101973 is a high-severity 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 NULL Pointer Dereference vulnerability in the pkid component of Juniper Networks Junos OS allows an unauthenticated remote attacker to cause a denial of service via a malformed packet received during CMP enrollment or automatic certificate re-enrollment.
Weakness: CWE-476
Which versions are affected by CVE-2026-101973?
How do I fix CVE-2026-101973?
No fix has been published for CVE-2026-101973 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-101973 being exploited?
There is no known exploitation of CVE-2026-101973 in the wild and no public exploit code.
Sources
Also known as GHSA-8w7w-9xwf-7fcj.