How severe is CVE-2017-10140?

CVE-2017-10140 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-10140 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-10140?

CVE-2017-10140 affects Postfix. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-10140?

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.

When was CVE-2017-10140 published?

CVE-2017-10140 was published on 2018-04-16 and last updated on 2026-06-17.

CVE-2017-10140

CVE-2017-10140 is a high-severity vulnerability in Postfix with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Postfix
Published: 2018-04-16
Last modified: 2026-06-17

Description

Postfix before 2.11.10, 3.0.x before 3.0.10, 3.1.x before 3.1.6, and 3.2.x before 3.2.2 might allow local users to gain privileges by leveraging undocumented functionality in Berkeley DB 2.x and later, related to reading settings from DB_CONFIG in the current directory.

Frequently asked questions

What is CVE-2017-10140?: Postfix before 2.11.10, 3.0.x before 3.0.10, 3.1.x before 3.1.6, and 3.2.x before 3.2.2 might allow local users to gain privileges by leveraging undocumented functionality in Berkeley DB 2.x and later, related to reading settings from DB_CONFIG in the current directory.
How severe is CVE-2017-10140?: CVE-2017-10140 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-10140 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-10140?: CVE-2017-10140 affects Postfix. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-10140?: 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.
When was CVE-2017-10140 published?: CVE-2017-10140 was published on 2018-04-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:postfix:postfix:*:*:*:*:*:*:*:*