SingularityCE and SingularityPRO are open source container platforms. Prior to SingularityCE 4.3.5 and SingularityPRO 4.1.11 and 4.3.5, if a user relies on LSM restrictions to prevent malicious operations then, under certain circumstances, an attacker can redirect the LSM label write operation so that it is ineffective. The attacker must cause the user to run a malicious container image that redirects the mount of /proc to the destination of a shared mount, either known to be configured on the target system, or that will be specified by the user when running the container. The attacker must also control the content of the shared mount, for example through another malicious container which also binds it, or as a user with relevant permissions on the host system it is bound from. This vulnerability is fixed in SingularityCE 4.3.5 and SingularityPRO 4.1.11 and 4.3.5.
CVE-2025-64750
This medium-severity CVE scores 4.5 under NVD CVSS v3. EPSS exploit probability: 0.0%, top 98% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 4.5
- EG Score
- 4.5(medium)
- EPSS
- 3.8%
- KEV
- Not listed
Published
December 2, 2025
Last Modified
June 17, 2026
References (6)
- security-advisories@githubhttps://github.com/advisories/GHSA-fh74-hm69-rqjw
- security-advisories@githubhttps://github.com/opencontainers/runc/security/advisories/GHSA-cgrx-mc8f-2prm
- security-advisories@githubhttps://github.com/sylabs/singularity/commit/27882963879a7af1699fd6511c3f5f1371d80f33
- security-advisories@githubhttps://github.com/sylabs/singularity/commit/5af3e790c40593591dfc26d0692e4d4b21c29ba0
- security-advisories@githubhttps://github.com/sylabs/singularity/pull/3850
- security-advisories@githubhttps://github.com/sylabs/singularity/security/advisories/GHSA-wwrx-w7c9-rf87
Affected Packages
(2 across 1 ecosystem)
Go(2)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| github.com/sylabs/singularity | — | — | — |
| github.com/sylabs/singularity/v4 | — | — | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 43× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 113 total refreshes for this CVE.
- 2026-07-22 14:08 UTCEPSS rescore
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Frequently asked(5)
What is CVE-2025-64750?
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Dependency Blast Radius
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