High CVSS 8.3
CVE-2026-21047
Out-of-bounds write in ImsService prior to SMR Jul-2026 Release 1 allows remote attackers to potentially execute arbitrary code.
What this means
- Exposure
- Exploitable remotely over the network, without authentication and with no action from the victim. It also depends on circumstances the attacker does not control.
- Impact
- An attacker can modify or destroy data and take the service offline.
- Weakness
- An out-of-bounds write corrupts neighbouring memory and often enables code execution.
- Likelihood
- Its EPSS score stays low: nothing points to imminent exploitation, which is no reason to leave it unpatched.
What to doFold into the next patch cycle. Start with the instances exposed to the internet.
Read automatically from the CVSS vector, the weakness type (CWE) and the EPSS score. The technical description above remains the one published by NIST.