How severe is CVE-2026-34502?

CVE-2026-34502 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-34502 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-2026-34502?

CVE-2026-34502 affects Apache Apr-util. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34502?

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-2026-34502 published?

CVE-2026-34502 was published on 2026-08-06 and last updated on 2026-08-07.

CVE-2026-34502

CVE-2026-34502 is a high-severity vulnerability in Apache Apr-util with a CVSS 3.x base score of 7.5. 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-122.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-122
Affected product: Apache Apr-util
Published: 2026-08-06
Last modified: 2026-08-07

Description

Heap-based Buffer Overflow vulnerability in Apache Portable Runtime Utility memcached client This issue affects Apache Portable Runtime Utility: from 1.3.0 through 1.6.3.

Frequently asked questions

What is CVE-2026-34502?: Heap-based Buffer Overflow vulnerability in Apache Portable Runtime Utility memcached client This issue affects Apache Portable Runtime Utility: from 1.3.0 through 1.6.3.
How severe is CVE-2026-34502?: CVE-2026-34502 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-34502 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-2026-34502?: CVE-2026-34502 affects Apache Apr-util. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34502?: 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-2026-34502 published?: CVE-2026-34502 was published on 2026-08-06 and last updated on 2026-08-07.

References

Affected products (1)

cpe:2.3:a:apache:apr-util:*:*:*:*:*:*:*:*

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