CVE-2026-71969
OP-TEE RSA NOPAD buffer underwrite allows secure-world heap corruption
Is CVE-2026-71969 being exploited?
Not confirmed. CVE-2026-71969 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.13% probability of exploitation in the next 30 days.
How severe is CVE-2026-71969?
CVE-2026-71969 is rated High with a CVSS score of 8.4. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-71969?
Yes. A fix has been recorded for CVE-2026-71969. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-71969 affect?
CVE-2026-71969 affects OP-TEE OS <= 4.10.0, mbedTLS RSA NOPAD backend, NXP SE050 driver, ARM TrustZone-enabled devices. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-71969?
Apply OP-TEE fix (commit 7b8b494) or vendor patch; vet/revoke untrusted TAs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
A malicious Trusted Application can corrupt S-EL1 secure-world heap, enabling secure-world memory corruption, potential code execution or DoS in TrustZone.
Immediate action required
- affected<= 4.10.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.