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NVD / CVE Program· CNA GitHub_M

CVE-2024-40635: containerd has an integer overflow in User ID handling

Noroxi assessment

Priority: Monitor (action score 31/100)

  • Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.30% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: azl3 containerd 1.7.13-8 on Azure Linux 3.0 1.7.13-8; azl3 containerd2 2.0.0-8 on Azure Linux 3.0 2.0.0-8; azl3 containerd2 2.0.0-9 on Azure Linux 3.0 2.0.0-8.
  • Severity is disputed: the assigning authority (CNA) scores it 4.6, NVD 7.8.

Low priority for now. Upgrade to azl3 containerd 1.7.13-8 on Azure Linux 3.0 1.7.13-8; azl3 containerd2 2.0.0-8 on Azure Linux 3.0 2.0.0-8; azl3 containerd2 2.0.0-9 on Azure Linux 3.0 2.0.0-8 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

containerd is an open-source container runtime. A bug was found in containerd prior to versions 1.6.38, 1.7.27, and 2.0.4 where containers launched with a User set as a `UID:GID` larger than the maximum 32-bit signed integer can cause an overflow condition where the container ultimately runs as root (UID 0). This could cause unexpected behavior for environments that require containers to run as a non-root user. This bug has been fixed in containerd 1.6.38, 1.7.27, and 2.04. As a workaround, ensure that only trusted images are used and that only trusted users have permissions to import images.

HighCVSS 7.8 · v3.1—Proof of concept Fix available
Published
Mar 17, 2025
Updated
Jun 17, 2026
EPSS
0.3% · 23th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.8
CNA · GitHub_M
4.6
3.2 point gap

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Proof of concept exists, no weaponized module
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2024-40635

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxfoundationcontainerd
debiandebian linux

Using containerd? Add it to your stack and be the first to know about CVEs like this one. (Docker)

Watch new CVEs for containerd

When you'll hear from us

  • when a new CVE affecting this product is published
  • when a record in your stack enters KEV or gets exploit code

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  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
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Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux11.0
  • linuxfoundation containerdbefore 1.6.38
  • linuxfoundation containerd1.7.0 and later · before 1.7.27
  • linuxfoundation containerd2.0.0 and later · before 2.0.4

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • containerd containerd

    • < 1.6.38, >= 1.7.0-beta.0, < 1.7.27, >= 2.0.0-beta.0, < 2.0.4affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:11containerdbefore 1.4.13~ds1-1~deb11u51.4.13~ds1-1~deb11u5
Debian:12containerdbefore 1.6.20~ds1-1+deb12u21.6.20~ds1-1+deb12u2
Debian:13containerdbefore 1.7.24~ds1-61.7.24~ds1-6
Gogithub.com/containerd/containerdfrom 1.7.0-beta.0 · before 1.7.271.7.27
Gogithub.com/containerd/containerdbefore 1.6.381.6.38
Gogithub.com/containerd/containerd/v2before 2.0.42.0.4
openSUSE:Leap 15.6containerdbefore 1.7.27-150000.123.11.7.27-150000.123.1
openSUSE:Tumbleweedcmctlbefore 2.2.0-1.12.2.0-1.1
openSUSE:Tumbleweedcontainerdbefore 1.7.27-1.11.7.27-1.1
openSUSE:Tumbleweedgovulncheck-vulndbbefore 0.0.20250318T181448-1.10.0.20250318T181448-1.1
SUSE:Linux Enterprise Micro 5.3containerdbefore 1.7.27-150000.123.11.7.27-150000.123.1
SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5containerdbefore 1.7.27-16.100.11.7.27-16.100.1
SUSE:Linux Micro 6.0containerdbefore 1.7.27-1.11.7.27-1.1
SUSE:Linux Micro 6.1containerdbefore 1.7.27-slfo.1.1_1.11.7.27-slfo.1.1_1.1

Same product

linuxfoundation: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-23648Insecure handling of image volumes in containerd CRI plugin
    38Monitor
  • CVE-2026-53488containerd CRI plugin: — image-config `LABEL` flows to restart-monitor `binary://` logger: host-root command execution from an image pull
    37Monitor
  • CVE-2021-43816Improper Preservation of Permissions in containerd
    37Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2023-25153Feb 16, 2023 · containerd OCI image importer memory exhaustion
    22Monitor
  • ← EarlierCVE-2023-25173Feb 16, 2023 · containerd supplementary groups are not set up properly
    31Monitor
  • Later →CVE-2025-47290May 20, 2025 · Containerd vulnerable to host filesystem access during image unpack
    30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
azl3 containerd 1.7.13-8 on Azure Linux 3.01.7.13-8 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 containerd2 2.0.0-8 on Azure Linux 3.02.0.0-8 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 containerd2 2.0.0-9 on Azure Linux 3.02.0.0-8 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 moby-containerd-cc 1.7.7-9 on Azure Linux 3.01.7.7-9 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 moby-containerd 1.6.26-11 on CBL Mariner 2.01.6.26-11 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 moby-containerd 1.6.26-11 on CBL-Mariner 2.01.6.26-11 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 moby-containerd-cc 1.7.7-11 on CBL Mariner 2.01.7.7-11 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 moby-containerd-cc 1.7.7-11 on CBL-Mariner 2.01.7.7-11 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:containerd1.6.20~ds1-1+deb12u2 · Debian:12Package registry (OSV)
Go:github.com/containerd/containerd1.6.38Package registry (OSV)
Go:github.com/containerd/containerd1.7.27Package registry (OSV)
Go:github.com/containerd/containerd/v22.0.4Package registry (OSV)
opensuse:cmctl2.2.0-1.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:containerd1.7.27-150000.123.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:govulncheck-vulndb0.0.20250318T181448-1.1 · openSUSE:TumbleweedPackage registry (OSV)
suse:containerd1.7.27-150000.123.1 · SUSE:Linux Enterprise Micro 5.3Package registry (OSV)

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Proof-of-concept repository on GitHubstars:02025-04-30

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. First PoC+43 d
  3. TodayNov 4, 2026+597 d

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-190 · Integer Overflow or Wraparound

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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References

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records