VulnerabilityModified
CVE-2018-20742
It could cause an arbitrary enclave memory write.
HIGH 7.5EPSS 1.39%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.39%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in UC Berkeley RISE Opaque before 2018-12-01. There is no boundary check on ocall_malloc. The return value could be a pointer to enclave memory. It could cause an arbitrary enclave memory write.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 1.39% probability · 72th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- ucbrise/opaque
- Source
- cve@mitre.org
EPSS 1.4% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/ucbrise/opaque/commit/5ddda15d89f5ac82f4416208c5319ace4aecdc36Patch, Third Party Advisory
- https://github.com/ucbrise/opaque/issues/66Exploit, Patch, Third Party Advisory
- https://github.com/ucbrise/opaque/commit/5ddda15d89f5ac82f4416208c5319ace4aecdc36Patch, Third Party Advisory
- https://github.com/ucbrise/opaque/issues/66Exploit, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.