How severe is CVE-2020-5499?

CVE-2020-5499 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-5499 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-5499?

CVE-2020-5499 affects Apache Rust Sgx Sdk. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-5499?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-5499 published?

CVE-2020-5499 was published on 2020-01-04 and last updated on 2026-06-17.

CVE-2020-5499

CVE-2020-5499 is a critical-severity vulnerability in Apache Rust Sgx Sdk with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Apache Rust Sgx Sdk
Published: 2020-01-04
Last modified: 2026-06-17

Description

Baidu Rust SGX SDK through 1.0.8 has an enclave ID race. There are non-deterministic results in which, sometimes, two global IDs are the same.

Frequently asked questions

What is CVE-2020-5499?: Baidu Rust SGX SDK through 1.0.8 has an enclave ID race. There are non-deterministic results in which, sometimes, two global IDs are the same.
How severe is CVE-2020-5499?: CVE-2020-5499 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-5499 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-5499?: CVE-2020-5499 affects Apache Rust Sgx Sdk. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-5499?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-5499 published?: CVE-2020-5499 was published on 2020-01-04 and last updated on 2026-06-17.

References

https://github.com/wssgcsc58/CVEs/tree/master/baidurustsgxsdk_enclaveid_race

Affected products (1)

cpe:2.3:a:apache:rust_sgx_sdk:*:*:*:*:*:*:*:*