Vulnerability · CVE-2026-105959
A flaw was found in spice-server.
Published Oct 16, 2026 · catalog updated Oct 17, 2026 · A flaw was found
Check if you run it
No confirmed exploitation is on record for CVE-2026-105959. EPSS is 0.40%. Act only if a listed version of A flaw was found is installed.
Gaps on this record
- The stored product name is a package slug. The name on this page is taken from the title (A flaw was found).
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- High7.5
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.40%
- Remediation
- Advisory link
- Affected products
- Debian:12 spice · Debian:13 spice · Debian:14 spice
A flaw was found in spice-server. The GLZ encoder dictionary restore path truncates a size_t allocation size to int when calling the malloc callback, allowing a malicious authenticated SPICE client during VM live migration to trigger a massive heap buffer overflow by sending a crafted max_encoders value in migration data.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- Debian:12 spice0.15.1-1, 0.15.2-1, 0.16.0-1
- Debian:13 spice0.15.2-1, 0.16.0-1, 0.16.0-2
- Debian:14 spice0.15.2-1, 0.16.0-1, 0.16.0-2
How to fix CVE-2026-105959
Recommended remediation
A patch or advisory reference is linked. Open the original publisher for availability by product version.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2026-105959. EPSS is 0.40%. Act only if a listed version of A flaw was found is installed.
Which versions are affected?
Compare what you have installed with 0.15.1-1, 0.15.2-1, 0.16.0-1, 0.15.2-1, 0.16.0-1, 0.16.0-2. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.40%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Technology hubs
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Oct 16, 2026 · OpenSSF OSV / OSV Scanner
Detected
A flaw was found in spice-server. The GLZ encoder dictionary restore path truncates a size_t allocation size to int when calling the malloc callback, allowing a malicious authenticated SPICE client during VM live migration to trigger a massive heap buffer overflow by sending a crafted max_encoders value in migration data.
Oct 17, 2026 · OpenSSF OSV / OSV Scanner
Updated
A flaw was found in spice-server. The GLZ encoder dictionary restore path truncates a size_t allocation size to int when calling the malloc callback, allowing a malicious authenticated SPICE client during VM live migration to trigger a massive heap buffer overflow by sending a crafted max_encoders value in migration data.
Sources
- CVE.orgVulnerability recordCVE-2026-105959
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-105959
30-day exploitation probability 0.4%
first.org - OpenSSF OSV / OSV ScannerPackage advisoryDEBIAN-CVE-2026-105959osv.dev
References
Freshness
Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.