CVE-2026-41516 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-41516LOW

OP-TEE: Hisilicon HPRE PKCS#1 v1.5 Decryption Padding Oracle

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  L  N  N    3.3   .0013    3.3     —

AFFECTED
  Product   Versions              Fixed
  optee_os  >= 4.5.0, < 4.11.0 –  —

TIMELINE
  Apr 20  Reserved by GitHub_M
  Jul 6   EXPLOIT PUBLISHED — CVE-2026-41516 (OP-TEE optee_os). Public exploit reference added.
  Jul 6   Published (CNA: GitHub_M)

CWE-208 · CNA: GitHub_M · CVSS v3.1 · 1 reference · NVD status: Analyzed

Description

OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using the TrustZone technology. Starting in version 4.5.0 and prior to version 4.11.0, the RSA PKCS#1 v1.5 decryption implementation in the Hisilicon HPRE crypto driver uses non-constant-time `memcmp()` for label hash verification and has multiple distinguishable error paths. This creates a Bleichenbacher-style padding oracle that allows an attacker to recover RSA PKCS#1 v1.5 plaintext. Version 4.11.0 contains a patch. As a workaround, disable Hisilicon HPRE RSA driver with `CFG_HISILICON_ACC_V3=n`.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
April 20, 2026	Reserved	Reserved by GitHub_M
July 6, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-41516 (OP-TEE optee_os). Public exploit reference added.
July 6, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
OP-TEE	optee_os	—	>= 4.5.0, < 4.11.0	—

Weaknesses

CWE-208

References (1)

https://github.com/OP-TEE/optee_os/security/advisories/GHSA-wxp6-8wwr-h4gf [Mitigation, Vendor Advisory, Exploit, Patch]

Authoritative record: CVE-2026-41516 at cve.org

Vendors: op-tee

Weaknesses: CWE-208

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-41516 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.