CVE Explorer
CVE-2026-33662
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. From 3.8.0 to 4.10, in the function emsa_pkcs1_v1_5_encode() in core/drivers/crypto/crypto_api/acipher/rsassa.c, the amount of padding needed, "PS size", is calculated by subtracting the size of the digest and other fields required for the EMA-PKCS1-v1_5 encoding from the size of the modulus of the key. By selecting a small enough modul
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"optee_os","vendor":"OP-TEE","versions":[{"status":"affected","version":">= 3.8.0, <= 4.10"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:b746fa222b4d11afa733dd3e0ba2e054aca1e943a5a57fffce30e44f01c4e6ab · sha256:75570e148866c388… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:b746fa222b4d11afa733dd3e0ba2e054aca1e943a5a57fffce30e44f01c4e6ab · sha256:75570e148866c388… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-190","description":"CWE-190: Integer Overflow or Wraparound","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:b746fa222b4d11afa733dd3e0ba2e054aca1e943a5a57fffce30e44f01c4e6ab · sha256:75570e148866c388… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"https://github.com/OP-TEE/optee_os/security/advisories/GHSA-4cf8-v5g3-73gr","tags":["x_refsource_CONFIRM"],"url":"https://github.com/OP-TEE/optee_os/security/advisories/GHSA-4cf8-v5g3-73gr"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:b746fa222b4d11afa733dd3e0ba2e054aca1e943a5a57fffce30e44f01c4e6ab · sha256:75570e148866c388… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.