CVE-2026-85220
Denial-of-Service in the Thinkst Canary Redis service
02 Description
Denial-of-Service in the Thinkst Canary Redis service
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.40% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 34.5% of scored records. A rank, not a probability.
- NVD base score
- 3.7 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
- NVD analysis status
- Deferred. NVD last modified this record on 2026-09-22.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-09-21 13:13Z1 MO AGO
- Last updated
- 2026-09-21 14:48Z1 MO AGO
- Reserved
- 2026-09-03
- Assigning CNA
- ThinkstAppliedResearch
- Record state
- PUBLISHED
- Severity
- Low (CVSS 3.7)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
- Weaknesses
- CWE-770Allocation of Resources Without Limits or ThrottlingBase
- Data version
- 5.2
- Document digest
- e83656d5fa2502c5acfb77377cb2eeb3c900cbdfd23e09d7ed2747e46ffa76ed
05 Affected products
06 References
07 Remediation
Canary is available across multiple platforms, each with its own version number. The table below shows the first affected and patched versions for all Canary platforms. Platform | First Vulnerable Canary Release | First Fixed Canary Release ------------------+---------------------------------+---------------------------- AWS EC2 | 2.0.2 | 5.3.2 Docker | 3.7.1 | 5.7.2 GCP | 2.2.3 | 5.4.2 Hardware | 1.0 | 5.1.2 Microsoft Azure | 2.2.9 | 5.6.4 Microsoft Hyper-V | 2.3.2 | 5.5.2 Nutanix | 4.9.0 | 5.9.2 OCI | 3.11.10 | 5.11.2 OpenStack | 3.8.9 | 5.8.2 Tailscale | 2.2.1 | 5.3.2 VMware ESXi | 2.0.2 | 5.2.2