Heap-based buffer overflow in the verify_vbr_checksum function in exfatfsck in exfat-utils before 1.2.1 allows remote attackers to cause a denial of service (infinite loop) or possibly execute arbitrary code via a crafted filesystem.
CVE-2015-8026
HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence
Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 7.8; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 4%CVSS: 7.8Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.8
- EG Score
- 7.8(medium)
- EPSS
- 90.3%
- KEV
- Not listed
Published
March 27, 2017
Last Modified
May 13, 2026
References (12)
- cve@mitrehttp://www.openwall.com/lists/oss-security/2015/10/29/13
- cve@mitrehttp://www.securityfocus.com/bid/77307
- cve@mitrehttps://blog.fuzzing-project.org/25-Heap-overflow-and-endless-loop-in-exfatfsck-exfat-utils.html
- cve@mitrehttps://github.com/relan/exfat/commit/2e86ae5f81da11f11673d0546efb525af02b7786
- cve@mitrehttps://github.com/relan/exfat/issues/5
- cve@mitrehttps://security.gentoo.org/glsa/201612-31
- af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2015/10/29/13
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/77307
- af854a3a-2127-422b-91ae-364da2661108https://blog.fuzzing-project.org/25-Heap-overflow-and-endless-loop-in-exfatfsck-exfat-utils.html
- af854a3a-2127-422b-91ae-364da2661108https://github.com/relan/exfat/commit/2e86ae5f81da11f11673d0546efb525af02b7786
- af854a3a-2127-422b-91ae-364da2661108https://github.com/relan/exfat/issues/5
- af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201612-31
Data Freshness Timeline
(refreshed 7× in last 7d / 39× 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.
- 2026-07-06 16:24 UTCEPSS rescore
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- 2026-05-22 15:00 UTCGHSA enrichment
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Frequently asked(5)
What is CVE-2015-8026?
CVE-2015-8026 is a high vulnerability published on March 27, 2017. Heap-based buffer overflow in the verifyvbrchecksum function in exfatfsck in exfat-utils before 1.2.1 allows remote attackers to cause a denial of service (infinite loop) or possibly execute arbitrary code via a crafted filesystem.
When was CVE-2015-8026 disclosed?
CVE-2015-8026 was first published in the National Vulnerability Database on March 27, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-8026 actively exploited?
CVE-2015-8026 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 90.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2015-8026?
CVE-2015-8026 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2015-8026?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-8026, 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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