CVE-2021-22548 json
Arbitrary enclave memory overread vulnerability in Asylo TrustedPrimitives::UntrustedCall
published 2021-06-08 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-9689
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 1%
- public exploits
- 0
- none known
Summary
An attacker can change the pointer to untrusted memory to point to trusted memory region which causes copying trusted memory to trusted memory, if the latter is later copied out, it allows for reading of memory regions from the trusted region. It is recommended to update past 0.6.2 or git commit https://github.com/google/asylo/commit/53ed5d8fd8118ced1466e509606dd2f473707a5c
Patch / fix
Exploit prediction
0.12% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L |
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- Google LLC Asylo
Classification
- Weakness
-
- CWE-788 Access of Memory Location After End of Buffer
References
-
github.com
/google/asylo/commit/53ed5d8fd8118ced1466e509606dd2f473707a5c
patch, third-party-advisory
Sources
- CVE List CVE-2021-22548
- NVD CVE-2021-22548
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