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  4. CVE 2026 57965 spice vdagent integer overflow in udscswrite
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Back to active CVEs
Medium · CVSS 5.1CVE-2026-57965

Spice-vdagent: integer overflow in udscs_write() leading to heap buffer overflowCVE-2026-57965

Answer in brief

CVE-2026-57965 records a Medium severity (CVSS 5.1) vulnerability in Spice-vdagent: integer overflow in udscs_write() leading to heap buffer overflow. The current sources do not mark it as known exploited. The current feed maps Red Hat/mingw-spice-vdagent (generic), Red Hat/spice-vdagent (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jun 29, 2026Updated Nov 5, 2026Source checked Nov 5, 2026First seen by HOL Jun 29, 2026Material review Nov 5, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.1
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 5.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Red Hat/mingw-spice-vdagent (generic), Red Hat/spice-vdagent (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Red Hat/mingw-spice-vdagentgeneric*Not reported
Red Hat/spice-vdagentgeneric*Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Red Hat/mingw-spice-vdagent, Red Hat/spice-vdagent.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Jun 29, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Jun 29, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
Upstream source description

A flaw was found in spice-vdagent. A malicious or compromised SPICE host can trigger an integer overflow by sending a specially crafted message. This vulnerability can lead to a heap buffer overflow, causing the spice-vdagent daemon to crash and resulting in a Denial of Service (DoS) for the virtual machine. This issue requires the SPICE host to be untrusted or compromised for exploitation.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Buffer Overflow
EPSS
Not reported
CWE IDs
CWE-190
Source
CVE List V5
Source checked
Nov 5, 2026
References
2 linked sources
Open source record