Information disclosure via PQS pre-buffer read
Published Sep 26, 2025 · Updated Sep 26, 2025
Out-of-bounds reading in the PQS parser in Open Babel 3.1.1 and earlier allows attackers to read process memory via a crafted file. The lowerit helper reads one or more bytes before its input buffer when PQSFormat::ReadMolecule parses malformed content. Exploitation requires a victim or service to process the file through obabel, OBConversion, or a language binding, exposing adjacent memory or interrupting parsing.
Summary
What happened
Out-of-bounds reading in the PQS parser in Open Babel 3.1.1 and earlier allows attackers to read process memory via a crafted file. The lowerit helper reads one or more bytes before its input buffer when PQSFormat::ReadMolecule parses malformed content. Exploitation requires a victim or service to process the file through obabel, OBConversion, or a language binding, exposing adjacent memory or interrupting parsing.
The record
- CVE
- CVE-2025-11000
- Published
- Sep 26, 2025
- Updated
- Sep 26, 2025
- Vendor
- Open Babel
- Product
- Open Babel
- Classifications
- CWE-476, CWE-125, CWE-404, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 26, 2025CVE publishedPublication date reported by the CVE source.
- Sep 26, 2025Record 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=3.1.0
- Affected versionversion=3.1.1
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
- PQS crafted-file reproducerproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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