CVE-2026-41568 — Moby: Race condition in docker cp allows creation of arbitrary empty files on the host via symlink swap
Moby is an open source container framework. In Docker Engine prior to version 29.5.1, Docker Daemon versions 28.5.2 and prior, and Moby Daemon prior to version 2.0.0-beta.14, a race condition during docker cp mount setup allows a malicious container to create empty files or directories at arbitrary absolute paths on the host filesystem. This issue has been patched in Docker Engine version 29.5.1 and Moby Daemon version 2.0.0-beta.14.
Who exploits it and how urgent it is
A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.
How the score was calculated
- EPSS 0.1% (30-day exploitation probability)+0
- Technical severity (medium)+3
The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).
Triage
Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.
CISA SSVC assessment CISA
Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.
Remediation
Fixes and mitigations documented by the sources — linked to the original advisory.
- Documented mitigation — github.com (NIST National Vulnerability Database)
First 24 hours
Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.
- Identify exposed assets running the affected vendor/product/version combinations (Docker Engine, Moby Moby, Mobyproject Moby…).
- Apply the documented mitigations until a definitive fix is available.
- Exploitation requires user interaction: tighten email/web filtering and warn affected users.
- Search available logs for exploit probes, errors and authentication anomalies.
Affected scope
Vendor, product and versions as the sources word them.
| Vendor | Product | Versions | Status | Source |
|---|---|---|---|---|
| Docker | Engine | < 29.5.1 | Vulnerable | NIST National Vulnerability Database |
| Moby | Moby | version github.com/moby/moby/v2/daemon < 2.0.0-beta.14version Docker Engine < 29.5.1version github.com/docker/docker/daemon <= 28.5.2 | Vulnerable | CVE Program (cve.org) e CISA ADP |
| Mobyproject | Moby | ≤ 28.5.2 | Vulnerable | NIST National Vulnerability Database |
| Mobyproject | Moby/v2 |
version 2.0.0-beta11version 2.0.0-beta12version 2.0.0-beta13version 2.0.0-beta2version 2.0.0-beta3version 2.0.0-beta4version 2.0.0-beta5version 2.0.0-beta6 and 6 moreversion 2.0.0-beta7version 2.0.0-beta8version 2.0.0-beta9version 2.0.0-beta10version 2.0.0-beta1version 2.0.0-beta0 |
Vulnerable | NIST National Vulnerability Database |
Attack characteristics
The CVSS vector, decoded. It describes the attack, not your exposure to it.
Every base score collected
Sources score independently and may disagree; each row says who scored it and under which version.
| Score | Version | Severity | Expl. | Impact | Scored by |
|---|---|---|---|---|---|
| 6.1 | CVSS 3.1 | Medium | 0.8 | 4.7 | security-advisories@github.com via NIST National Vulnerability Database |
| 6.1 | CVSS 3.1 | Medium | — | — | GitHub_M via CVE Program (cve.org) e CISA ADP |
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:H (score shown at the top: security-advisories@github.com) Weakness MITRE
Weakness class according to MITRE’s CWE catalog.
EPSS over time FIRST
Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 0.10%
Detection
Read off the CVSS vector and the weakness class. Starting points, not tested rules.
- Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.
Timeline
What happened to this CVE, newest first.
- 2026
- Affected products added · moby/moby
- SSVC assessment updated
- Record published
- Fix documented
- CVSS changed · 6.1
- Source status changed · → Analyzed
- Record created in this database
- CVE published
Source activity
Repeated readings are counted rather than listed.
- 1× Official description updated · Oct 13, 2026 – Oct 13, 2026
References
1 on the record
Elsewhere on this site
Related CVEs (same products)
- High CVE-2026-92543 Docker Engine insecure-registry fallback via malicious DNS responses 8d
- Medium CVE-2026-92542 Blind VXLAN injection into encrypted overlay networks from cluster peer 8d
- High CVE-2026-42306 Moby: Race condition in docker cp allows bind mount redirection to host path Jun 12, 2026
- High CVE-2026-33997 Moby: Off-by-one error in plugin privilege validation Mar 31, 2026
- High CVE-2026-34040 Moby: AuthZ plugin bypass with oversized request body Mar 31, 2026
Not in any source we poll
Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.
- No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
- No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
- No exploit packet captures, log samples, or incident case IDs supplied.
Answered from this record
Text assembled only from the fields above — no additional claims.
What should defenders know first?
CVE-2026-41568 is "Moby: Race condition in docker cp allows creation of arbitrary empty files on the host via symlink swap", rated Medium. It affects Engine (Docker); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 6.1 describes technical severity. EPSS 0.10% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.
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