How severe is CVE-2026-85878?

CVE-2026-85878 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-85878 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-85878?

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

When was CVE-2026-85878 published?

CVE-2026-85878 was published on 2026-09-18 and last updated on 2026-09-19.

CVE-2026-85878

CVE-2026-85878 is a critical-severity vulnerability with a CVSS 3.x base score of 9.9. 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-285.

Key facts

Severity: Critical (CVSS 3.x base score 9.9)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-285
Published: 2026-09-18
Last modified: 2026-09-19

Description

Improper authorization in Azure Database for PostgreSQL allows an authorized attacker to elevate privileges over a network.

Frequently asked questions

What is CVE-2026-85878?: Improper authorization in Azure Database for PostgreSQL allows an authorized attacker to elevate privileges over a network.
How severe is CVE-2026-85878?: CVE-2026-85878 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-85878 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-85878?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2026-85878 published?: CVE-2026-85878 was published on 2026-09-18 and last updated on 2026-09-19.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85878

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