Client memory disclosure via unchecked modifier index
Published Aug 17, 2026 · Updated Aug 18, 2026
Out-of-bounds read in Deskflow before 1.26.0.299 allows remote attackers to leak process memory or crash a client via DSOP messages. In src/lib/client/ServerProxy.cpp, ServerProxy::setOptions() stores wire-supplied modifier values in m_modifierTranslationTable without checking that they stay within the valid 0-6 range before ServerProxy::translateKey() and ServerProxy::translateModifierMask() use them to index the fixed s_translationTable and s_masks arrays. Exploitation requires a client to connect to a malicious or impersonated Deskflow server, after which modifier-key events can disclose four bytes at an attacker-chosen relative offset or terminate the client process.
Summary
What happened
Out-of-bounds read in Deskflow before 1.26.0.299 allows remote attackers to leak process memory or crash a client via DSOP messages. In src/lib/client/ServerProxy.cpp, ServerProxy::setOptions() stores wire-supplied modifier values in m_modifierTranslationTable without checking that they stay within the valid 0-6 range before ServerProxy::translateKey() and ServerProxy::translateModifierMask() use them to index the fixed s_translationTable and s_masks arrays. Exploitation requires a client to connect to a malicious or impersonated Deskflow server, after which modifier-key events can disclose four bytes at an attacker-chosen relative offset or terminate the client process.
The record
- CVE
- CVE-2026-65832
- Published
- Aug 17, 2026
- Updated
- Aug 18, 2026
- Vendor
- Deskflow
- Product
- Deskflow
- Classifications
- CWE-129, CWE-125, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 17, 2026CVE publishedPublication date reported by the CVE source.
- Aug 18, 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=< 1.26.0.299
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
- GHSA-8rcq-7w87-h64j PoCproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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