CVE-2026-46680

highPriorität · verfolgen · 41EPSS 0.002 · 5. PerzentilExploit · PoCEUFRRUUS
grimoire priorityP1 · Urgent
Exploitable?
Public exploit
1 exploit · PoC
Likely / severe?
0.16% (5th) EPSS
CVSS 7.8 · high
Is it mine?
26 products
Prüfe deine Angriffsfläche
Who says so?
6 sources
cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · bewertet 2026-10-26

containerd is an open-source container runtime. In versions prior to 1.7.32, 2.0.9, 2.2.4 and 2.3.1, containers launched with a numeric User directive that cannot be parsed as a 32-bit integer are incorrectly treated as a username, leading to runAsNonRoot evasion. If a crafted image provides an /etc/passwd file mapping this large numeric string to root, the container ultimately runs as root (UID 0). This allows the Kubernetes runAsNonRoot restriction to be bypassed, causing unexpected behavior for environments that require containers to run as a non-root user. This issue has been fixed in versions 1.7.32, 2.0.9, 2.2.4 and 2.3.1.

01

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

7.8
010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 6.4–7.8

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USAusnutzbarkeit 1.8 · Auswirkung 5.9
v3.17.8highAV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU
v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · OSV
v4.07.3highCVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:Nsecondary · ENISA EU
v4.07.3highCVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · security-advisories@github.com
v4.06.4mediumCVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)
02

SSVC

Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
03

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-269USCWE-269USCWE-269USCWE-843US
04

Exploits (1)

Öffentlicher Proof-of-Concept- und Exploit-Code.

05

betroffene Produkte (26)

Betroffene Produkte und Versionsbereiche.

20 von 26 angezeigt
06

Advisories (4)

Hersteller- und Ökosystem-Meldungen dazu.

  • GHSA-fqw6-gf59-qr4wcontainerd user ID handling bypass allows runAsNonRoot evasion2026-05-21ghsa · osvUS

    ### Impact A bug was found in containerd where containers launched with a numeric `User` directive that cannot be parsed as a 32-bit integer are incorrectly treated as a username. If a crafted image provides an `/etc/passwd` file mapping this large numeric string to root, the container ultimately runs as root (UID 0). This allows the Kubernetes `runAsNonRoot` restriction to be bypassed, causing unexpected behavior for environments that require containers to run as a non-root user. ### Patches This bug has been fixed in the following containerd versions: * 2.3.1 * 2.2.4 * 2.0.9 * 1.7.32 Note: The containerd 2.1 release has reached its [end of life](https://containerd.io/releases/#current-state-of-containerd-releases) and a fixed version is not provided. Users should update to these versions to resolve the issue. ### Workarounds Ensure that only trusted images are used and that only trusted users have permissions to import images. Alternatively, enforcing a specific numeric `runAsUser` in the Kubernetes Pod `securityContext` overrides the `USER` directive in the image and prevents the bypass. Newer versions of Kubernetes, starting with 1.34, also appear to enforce `runAsNonRoot` properly regardless of this bug. ### Credits The containerd project would like to thank Lei Wang (@ssst0n3) for responsibly disclosing this issue in accordance with the [containerd security policy](https://github.com/containerd/project/blob/main/SECURITY.md). ### Resources * https://github.com/advisories/GHSA-265r-hfxg-fhmg (CVE-2024-40635) ### For more information If there are any questions or comments about this advisory: * Open an issue in [containerd](https://github.com/containerd/containerd/issues/new/choose) * Send an email to [security@containerd.io](mailto:security@containerd.io) To report a security issue in containerd: * [Report a new vulnerability](https://github.com/containerd/containerd/security/advisories/new) * Send an email to [security@containerd.io](mailto:security@containerd.io)

  • CERTFR-2026-AVI-1336Multiples vulnérabilités dans les produits IBMFrançais2026-10-16vendor · certfrFR
  • CERTFR-2026-AVI-1385Multiples vulnérabilités dans les produits VMwareFrançais2026-10-26vendor · certfrFR
  • GO-2026-5378containerd user ID handling bypass allows runAsNonRoot evasion in github.com/containerd/containerd2026-06-25vendor · osvUS

    containerd user ID handling bypass allows runAsNonRoot evasion in github.com/containerd/containerd

07

auch bekannt als (6)

Weitere Namen und Kennungen dieser Entität.

08

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvdenisa_euvdfstec_bduosvnvdcertfrNVDCVE.orgMITRE
veröffentlicht 2026-07-01geändert 2026-09-17
09

Referenzen (3)

Externe Belege — Patches, Meldungen, Analysen.

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