How severe is CVE-2022-28331?

CVE-2022-28331 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-28331 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-28331?

CVE-2022-28331 affects Apache Portable Runtime. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-28331?

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-2022-28331 published?

CVE-2022-28331 was published on 2023-01-31 and last updated on 2026-06-17.

CVE-2022-28331

CVE-2022-28331 is a critical-severity vulnerability in Apache Portable Runtime with a CVSS 3.x base score of 9.8. 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-190.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-190
Affected product: Apache Portable Runtime
Published: 2023-01-31
Last modified: 2026-06-17

Description

On Windows, Apache Portable Runtime 1.7.0 and earlier may write beyond the end of a stack based buffer in apr_socket_sendv(). This is a result of integer overflow.

Frequently asked questions

What is CVE-2022-28331?: On Windows, Apache Portable Runtime 1.7.0 and earlier may write beyond the end of a stack based buffer in apr_socket_sendv(). This is a result of integer overflow.
How severe is CVE-2022-28331?: CVE-2022-28331 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-28331 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-28331?: CVE-2022-28331 affects Apache Portable Runtime. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-28331?: 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-2022-28331 published?: CVE-2022-28331 was published on 2023-01-31 and last updated on 2026-06-17.

References

https://lists.apache.org/thread/5pfdfn7h0vsdo5xzjn97vghp0x42jj2r

Affected products (1)

cpe:2.3:a:apache:portable_runtime:*:*:*:*:*:*:*:*

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