What is CVE-2023-50559?

CVE-2023-50559 is a medium-severity vulnerability in Openxiangshan Xiangshan. CVSS score: 5.5/10. Published 2023-12-30.

How severe is CVE-2023-50559?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Openxiangshan Xiangshan

CVE-2023-50559

An issue was discovered in XiangShan v2.1, allows local attackers to obtain sensitive information via the L1D cache.

Published 2023-12-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.002 (7.7th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Openxiangshan Xiangshan — versions 2.1

References

github.com/OpenXiangShan/XiangShan/issues/2534 (Issue Tracking)
gist.github.com/nieeka/5edb552e7cf62cdb18decd9c4292d429 (Third Party Advisory)

Frequently asked questions

What is CVE-2023-50559?: CVE-2023-50559 is a medium-severity vulnerability in Openxiangshan Xiangshan. CVSS score: 5.5/10. Published 2023-12-30.
How severe is CVE-2023-50559?: Medium severity. CVSS v3 base score is 5.5 out of 10.