CVE-2026-62764

Q: How do I fix CVE-2026-62764?

Upgrade accumulo to 2.1.6 or later.

Q: Is CVE-2026-62764 being actively exploited?

Not that we know of. CVE-2026-62764 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.47% is the estimated probability that it will be exploited in the next 30 days. That is higher than 39% of all scored CVEs.

Q: How severe is CVE-2026-62764?

CVE-2026-62764 has a CVSS v3 base score of 6.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2026-62764 affect?

Published advisories record a fix for accumulo (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

MEDIUM

6.5

CVSS v3

NVD

Description

Improper Handling of Insufficient Privileges vulnerability in Apache Accumulo. An authenticated, but low-privileged user without system permissions may issue a remote command to gracefully shutdown system components (compaction-coordinator, compactor, gc, manager, monitor, tserver, or sserver), leading to a denial of service. This issue affects Apache Accumulo 2.1.4 and 2.1.5. Users are recommended to upgrade to version 2.1.6, which fixes the issue.

CWE-274

How to fix

Remediation Available

accumuloNVD

Affected:>= 2.1.4, < 2.1.6Fixed in:2.1.6CVE-2026-62764derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

0.47%probability of exploitation in 30 days

39thpercentile

Low risk: more likely to be exploited than 39% of all known CVEs.

References

Patch1

github.com

Vendor Advisory1

lists.apache.org

Third-Party Advisory1

openwall.com

Release Notes1

accumulo.apache.org

Product1

accumulo.apache.org

Related Vulnerabilities

Other CWE-274 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-35534	High	7.2	1.7%	-	-
CVE-2025-20156	Critical	9.9	1.2%	-	Fix
CVE-2023-35928	High	8.4	1.0%	-	Fix
CVE-2022-45101	High	7.3	0.8%	-	Fix
CVE-2021-32006	Medium	5.0	0.6%	-	-
CVE-2022-0668	Medium	5.3	0.6%	-	Fix

Common questions

How do I fix CVE-2026-62764?

Upgrade accumulo to 2.1.6 or later.

Is CVE-2026-62764 being actively exploited?

Not that we know of. CVE-2026-62764 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.47% is the estimated probability that it will be exploited in the next 30 days. That is higher than 39% of all scored CVEs.

How severe is CVE-2026-62764?

CVE-2026-62764 has a CVSS v3 base score of 6.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-62764 affect?

Published advisories record a fix for accumulo (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-08-11.