How severe is CVE-2026-40993?

CVE-2026-40993 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2026-40993 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-40993?

CVE-2026-40993 affects Vmware Spring Security. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-40993?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-40993 have an EU (EUVD) identifier?

Yes. CVE-2026-40993 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35886.

When was CVE-2026-40993 published?

CVE-2026-40993 was published on 2026-06-10 and last updated on 2026-06-27.

CVE-2026-40993

CVE-2026-40993 is a high-severity vulnerability in Vmware Spring Security with a CVSS 3.x base score of 7.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: High (CVSS 3.x base score 7.3)
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-35886
Weakness: CWE-502
Affected product: Vmware Spring Security
Published: 2026-06-10
Last modified: 2026-06-27

Description

An attacker with write permissions to the database table managed by JdbcAssertingPartyMetadataRepository (saml2_asserting_party_metadata) may be able to store malicious serialized payloads in the columns containing the collection of verification or encryption credentials (verification_credentials and encryption_credentials, respectively). Affected versions: Spring Security 7.0.0 through 7.0.5.

Frequently asked questions

What is CVE-2026-40993?: An attacker with write permissions to the database table managed by JdbcAssertingPartyMetadataRepository (saml2_asserting_party_metadata) may be able to store malicious serialized payloads in the columns containing the collection of verification or encryption credentials (verification_credentials and encryption_credentials, respectively). Affected versions: Spring Security 7.0.0 through 7.0.5.
How severe is CVE-2026-40993?: CVE-2026-40993 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2026-40993 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-40993?: CVE-2026-40993 affects Vmware Spring Security. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-40993?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-40993 have an EU (EUVD) identifier?: Yes. CVE-2026-40993 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35886.
When was CVE-2026-40993 published?: CVE-2026-40993 was published on 2026-06-10 and last updated on 2026-06-27.

References

https://spring.io/security/cve-2026-40993

Affected products (1)

cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:*

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