CVE-2023-50559

MEDIUMNVD 5.55.5—

5.5

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

CVSS v3: 5.5
EG Score: 5.5(medium)
EPSS: 8.6%
KEV: Not listed

Published

December 30, 2023

Last Modified

June 17, 2026

References (4)

cve@mitrehttps://gist.github.com/nieeka/5edb552e7cf62cdb18decd9c4292d429
cve@mitrehttps://github.com/OpenXiangShan/XiangShan/issues/2534
af854a3a-2127-422b-91ae-364da2661108https://gist.github.com/nieeka/5edb552e7cf62cdb18decd9c4292d429
af854a3a-2127-422b-91ae-364da2661108https://github.com/OpenXiangShan/XiangShan/issues/2534

Data Freshness Timeline

(refreshed 12× in last 7d / 53× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-23 21:31 UTCEPSS rescore
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2026-06-09 11:14 UTCOSV refresh
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2026-06-07 15:23 UTCEPSS rescore
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2026-05-26 07:18 UTCEPSS rescore
2026-05-24 11:17 UTCEG score recompute
2026-05-24 11:17 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2023-50559?

CVE-2023-50559 is a medium vulnerability published on December 30, 2023. An issue was discovered in XiangShan v2.1, allows local attackers to obtain sensitive information via the L1D cache.

When was CVE-2023-50559 disclosed?

CVE-2023-50559 was first published in the National Vulnerability Database on December 30, 2023, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-50559 actively exploited?

CVE-2023-50559 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-50559?

CVE-2023-50559 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2023-50559?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-50559, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2023-50559

📅 Published

🔄 Last Modified

🔗 References (4)