Symlink planting via DOS-prefixed mode parsing
Published Jul 8, 2026 · Updated Jul 8, 2026
Link-resolution flaw in BBOT 2.3.1 through 2.8.6 allows remote attackers to plant symlinks through a crafted zip or 7z archive. The unarchive._check_archive_safe() zip/7z branch tested only the start of p7zip's Attributes value, so a DOS prefix hid the trailing Unix symlink mode and 7z x materialized the entry. Exploitation requires user interaction that causes BBOT to download and extract the archive on a host using legacy p7zip; the target is not written through.
Summary
What happened
Link-resolution flaw in BBOT 2.3.1 through 2.8.6 allows remote attackers to plant symlinks through a crafted zip or 7z archive. The unarchive._check_archive_safe() zip/7z branch tested only the start of p7zip's Attributes value, so a DOS prefix hid the trailing Unix symlink mode and 7z x materialized the entry. Exploitation requires user interaction that causes BBOT to download and extract the archive on a host using legacy p7zip; the target is not written through.
The record
- CVE
- CVE-2026-14966
- Published
- Jul 8, 2026
- Updated
- Jul 8, 2026
- Vendor
- Black Lantern Security
- Product
- BBOT
- Classifications
- CWE-59, CAPEC-132
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 8, 2026CVE publishedPublication date reported by the CVE source.
- Jul 8, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2.3.1 <=2.8.6
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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