Uncontrolled resource consumption in spice
Priority LOW 29CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Partial Red Hat: 2 fixed, 3 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-400.
Summary
A flaw was found in spice in versions before 0.14.92. A DoS tool might make it easier for remote attackers to cause a denial of service (CPU consumption) by performing many renegotiations within a single connection.
Why it matters now
EPSS 0.02703 86th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 1 advisoryRed Hat: 2 fixed, 3 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | spice | spice 0.14.92 | — | No fix listed | CNA |
- spice Vendor— Affected spice 0.14.92 Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:spice_project:spice:*:*:*:*:*:*:*:* | before 0.14.92 | Vulnerable | The SPICE Project |
| cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Red Hat |
- cpe:2.3:a:spice_project:spice:*:*:*:*:*:*:*:* Versions before 0.14.92 Vulnerable ·The SPICE Project
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
Remediation
Red Hat 1 advisory
- RHSA-2021:1924 Released 2021-05-18 · Red Hat rating Lowspice security update
- Red Hat CodeReady Linux Builder (v. 8) spice-server-devel-0.14.3-4.el8
- Red Hat Enterprise Linux AppStream (v. 8) spice-0.14.3-4.el8, spice-server-0.14.3-4.el8
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| Red Hat CodeReady Linux Builder (v. 8) | Fixed | RHSA-2021:1924 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2021:1924 |
Timeline
- 2026-10-02 Threatist record created from CVE-2021-20201
- 2026-10-03 Alias added: GHSA-f3pm-m5m9-45gw
References
Sources
- CVE-2021-20201 · CVE Program
- CVE-2021-20201 · NVD
- FIRST EPSS
- GHSA-f3pm-m5m9-45gw · GitHub Advisory Database · CC BY 4.0
- CVE-2021-20201 · Red Hat security data · CC BY 4.0
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