CVE-2026-62764: Improper Handling of Insufficient Privileges vulnerability in Apache Accumulo. An authenticated, but low-privi

This month

MEDIUM 6.5WATCHLISTUPGRADE

CVE-2026-62764 is a medium-severity flaw (CVSS 6.5) affecting accumulo. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 i

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-274
Published	2026-07-17
Last modified	2026-10-24

Publisher (CNA): Apache Software Foundation · Vendor: apache

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-17 09:16 UTCPublished CVE record published
2026-10-24 20:10 UTCUpdated Record last modified

apache accumulo UPGRADE

Affected: >= 2.1.4 and < 2.1.6

Fixed in: 2.1.6

Safe to downgrade to: a release before 2.1.4

1. Check installed version

apt-cache policy accumulo || rpm -q accumulo || accumulo --version

2. UPGRADE to 2.1.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade accumulo

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade accumulo

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 2.1.4 (Debian / Ubuntu)

apt-cache madison accumulo sudo apt install accumulo=<VERSION_BEFORE_2.1.4> sudo apt-mark hold accumulo

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list accumulo sudo dnf downgrade accumulo-<VERSION_BEFORE_2.1.4> sudo dnf versionlock add accumulo

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-62764?

accumulo: upgrade to 2.1.6. Exact commands for each OS are on this page.

Is CVE-2026-62764 being exploited?

CVE-2026-62764 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-62764 affect?

CVE-2026-62764 affects accumulo. Severity is medium (CVSS 6.5). 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,

How urgent is CVE-2026-62764?

Priority 42/100. On your watchlist

References

← Back to latest CVEs