Out-of-bounds read in deskflow
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
Deskflow is a keyboard and mouse sharing app. Prior to continuous build 1.26.0.299, a remote unauthenticated Deskflow server can send kMsgDSetOptions (DSOP) values to ServerProxy::setOptions() in src/lib/client/ServerProxy.cpp so that the value following a modifier option poisons m_modifierTranslationTable, after which ServerProxy::translateKey() or ServerProxy::translateModifierMask() indexes the seven-row s_translationTable or s_masks arrays out of bounds, disclosing four bytes at an attacker-selected relative offset or crashing the connected client; an odd option count also causes an out-of-bounds OptionsList read. This issue is fixed in continuous build 1.26.0.299.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA deskflow (deskflow) Fixed in 1.26.0.299
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2026-65832
References
More deskflow vulnerabilities
- TI-2026-45196 Deskflow: Odd-length DSOP options vector causes out-of-bounds read in Deskflow client CVSS 3.1HIGH 8.2
- TI-2026-30065 Deskflow: Local privilege escalation via unauthenticated IPC CVSS 3.1HIGH 7.8
- TI-2026-30064 Deskflow: clipboard deserialization global-buffer-overflow CVSS 4.0HIGH 7.4
- TI-2026-32267 Deskflow: TLS multiplexer DoS on failed `SSL_accept` CVSS 3.1HIGH 7.5
- TI-2026-46991 Deskflow: Clipboard receiver can accumulate data beyond Deskflow's configured clipboard size limit CVSS 3.1MEDIUM 6.5
Sources
- CVE-2026-65832 · CVE Program
- CVE-2026-65832 · NVD
- FIRST EPSS
- CVE-2026-65832 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences