Local memory disclosure via terminal backslash
Published Feb 27, 2026 · Updated Feb 27, 2026
Out-of-bounds read in the Berry 1.0 and 1.1.0 lexer allows local users to expose adjacent memory by parsing a crafted script. scan_string consumes an escape byte after a terminal backslash without checking for end of input, so next reads one byte past the static eos buffer. Local script-execution access is required; the published reproducer triggers an AddressSanitizer abort, while the read itself can disclose one adjacent byte.
Summary
What happened
Out-of-bounds read in the Berry 1.0 and 1.1.0 lexer allows local users to expose adjacent memory by parsing a crafted script. scan_string consumes an escape byte after a terminal backslash without checking for end of input, so next reads one byte past the static eos buffer. Local script-execution access is required; the published reproducer triggers an AddressSanitizer abort, while the read itself can disclose one adjacent byte.
The record
- CVE
- CVE-2026-3285
- Published
- Feb 27, 2026
- Updated
- Feb 27, 2026
- Vendor
- berry-lang
- Product
- Berry
- Classifications
- CWE-125, CWE-119
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 27, 2026CVE publishedPublication date reported by the CVE source.
- Feb 27, 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=1.0
- Affected versionversion=1.1.0
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
- Berry terminal-backslash reproducerproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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