CVE-2021-26258

HIGHNVD 7.87.8—Elevated

7.8

Improper access control for the Intel(R) Killer(TM) Control Center software before version 2.4.3337.0 may allow an authorized user to potentially enable escalation of privilege via local access.

CVSS v3: 7.8
EG Score: 7.8(medium)
EPSS: 75.5%
KEV: Not listed

Published

May 12, 2022

Last Modified

May 5, 2025

References (2)

secure@intelhttps://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00644.html
af854a3a-2127-422b-91ae-364da2661108https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00644.html

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-863Incorrect Authorization

Data Freshness Timeline

(refreshed 12× in last 7d / 20× 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.

2026-06-08 14:15 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

GitHub PoCzwclose/CVE-2021-26258
First seen Dec 17, 2022
Files and tools for CVE-2021-26258
Open source ↗

Frequently asked(5)

What is CVE-2021-26258?

CVE-2021-26258 is a high vulnerability published on May 12, 2022. Improper access control for the Intel(R) Killer(TM) Control Center software before version 2.4.3337.0 may allow an authorized user to potentially enable escalation of privilege via local access.

When was CVE-2021-26258 disclosed?

CVE-2021-26258 was first published in the National Vulnerability Database on May 12, 2022, with the most recent update on May 5, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-26258 actively exploited?

CVE-2021-26258 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 75.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-26258?

CVE-2021-26258 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2021-26258?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-26258, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-26258

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CVE-2021-26258

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-26258?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)