CVE-2021-33635
Pull malicious images may cause process to be hijacked
When malicious images are pulled by isula pull, attackers can execute arbitrary code.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Pull malicious images may cause process to be hijacked
When malicious images are pulled by isula pull, attackers can execute arbitrary code.
- Record
CVE-2021-33635- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-665, CWE-94
- Updated
- 2026-11-02
EUVDEUVD-2021-20312
When malicious images are pulled by isula pull, attackers can execute arbitrary code.
- Record
EUVD-2021-20312- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-r64q-rcp8-3m38
When malicious images are pulled by isula pull, attackers can execute arbitrary code.
When malicious images are pulled by isula pull, attackers can execute arbitrary code.
- Record
GHSA-r64q-rcp8-3m38- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-94, CWE-665
- Updated
- 2026-11-02
NVD
When malicious images are pulled by isula pull, attackers can execute arbitrary code.
- Record
CVE-2021-33635- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-665, CWE-94
- Updated
- 2026-11-02
OSVOESA-2023-1686
iSulad security update
Security Fix(es):
When malicious images are pulled by isula pull, attackers can execute arbitrary code.(CVE-2021-33635)
When the isula load command is used to load malicious images, attackers can execute arbitrary code.(CVE-2021-33636)
When the isula export command is used to export a container to an image and the container is controlled by an attacker, the attacker can escape the container.(CVE-2021-33637)
When the isula cp command is used to copy files from a container to a host machine and the container is controlled by an attacker, the attacker can escape the container.(CVE-2021-33638)
- Record
OESA-2023-1686- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
iSuladopenEuler:20.03-LTS-SP1 From an advisory covering 4 CVEs |
before 2.0.8-20230216.115408.git40ea936a.oe1 | 2.0.8-20230216.115408.git40ea936a.oe1 |
iSuladopenEuler:20.03-LTS-SP3 From an advisory covering 4 CVEs |
before 2.0.18-13.oe1 | 2.0.18-13.oe1 |
iSuladopenEuler:22.03-LTS From an advisory covering 4 CVEs |
before 2.1.3-6.oe2203sp2 | 2.1.3-6.oe2203sp2 |
iSuladopenEuler:22.03-LTS-SP1 From an advisory covering 4 CVEs |
before 2.0.18-13.oe2203sp1 | 2.0.18-13.oe2203sp1 |
iSuladopenEuler:22.03-LTS-SP2 From an advisory covering 4 CVEs |
before 2.1.3-6.oe2203sp2 | 2.1.3-6.oe2203sp2 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-33635 is a critical vulnerability (CVSS 9.8) in Openeuler Isula, published September 28, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.56%, the 46th percentile. No source names a fixed version.
References
openeuler.org/zh/security/security-bulletins/detail?id=openEuler-SA-2023-1686
gitee.com/src-openeuler/iSulad/pulls/627/files
nvd.nist.gov/vuln/detail/CVE-2021-33635
github.com/advisories/GHSA-r64q-rcp8-3m38