How severe is CVE-2019-1231?

CVE-2019-1231 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2019-1231 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-1231?

CVE-2019-1231 affects Microsoft Project Rome. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-1231?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-1231 published?

CVE-2019-1231 was published on 2019-09-11 and last updated on 2026-06-17.

CVE-2019-1231

CVE-2019-1231 is a medium-severity vulnerability in Microsoft Project Rome with a CVSS 3.x base score of 5.9. 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-295.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Microsoft Project Rome
Published: 2019-09-11
Last modified: 2026-06-17

Description

An information disclosure vulnerability exists in the way Rome SDK handles server SSL/TLS certificate validation, aka 'Rome SDK Information Disclosure Vulnerability'.

Frequently asked questions

What is CVE-2019-1231?: An information disclosure vulnerability exists in the way Rome SDK handles server SSL/TLS certificate validation, aka 'Rome SDK Information Disclosure Vulnerability'.
How severe is CVE-2019-1231?: CVE-2019-1231 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2019-1231 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-1231?: CVE-2019-1231 affects Microsoft Project Rome. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-1231?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-1231 published?: CVE-2019-1231 was published on 2019-09-11 and last updated on 2026-06-17.

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1231

Affected products (1)

cpe:2.3:a:microsoft:project_rome:1.4.1:*:*:*:*:*:*:*

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