CVE-2016-4373: The AdminUI in HPE Operations Manager (OM) before 9.21.130 on Linux, Unix, and Solaris allows remote attackers

This week

CRITICAL 9.8REMOTEWATCHLISTUPGRADEUPGRADEUPGRADE

CVE-2016-4373 is a critical-severity flaw (CVSS 9.8) affecting operations manager, operations manager, operations manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The AdminUI in HPE Operations Manager (OM) before 9.21.130 on Linux, Unix, and Solaris allows remote attackers to execute arbitrary commands via a crafted serialized Java object, related to the Apache Commons Collections (ACC) library.

Why this priority

Critical severity
EPSS top 9%: very likely to be exploited
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	4.4% (top 9%)
CISA exploited list	No
Weakness	CWE-284
Published	2016-08-01
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: hp

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2016-08-01 02:59 UTCPublished CVE record published
2026-06-17 00:47 UTCUpdated Record last modified

hp operations manager UPGRADE

Affected: <= 9.21.120

Fixed in: newer than 9.21.120

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy operations-manager || rpm -q operations-manager || operations-manager --version

2. UPGRADE to newer than 9.21.120 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade operations-manager

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade operations-manager

Note

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

hp operations manager UPGRADE

Affected: <= 9.21.120

Fixed in: newer than 9.21.120

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy operations-manager || rpm -q operations-manager || operations-manager --version

2. UPGRADE to newer than 9.21.120 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade operations-manager

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade operations-manager

Note

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

hp operations manager UPGRADE

Affected: <= 9.21.120

Fixed in: newer than 9.21.120

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy operations-manager || rpm -q operations-manager || operations-manager --version

2. UPGRADE to newer than 9.21.120 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade operations-manager

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade operations-manager

Note

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

hp operations manager DOWNGRADE

Affected: 9.20.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 9.20.0

1. Check installed version

apt-cache policy operations-manager || rpm -q operations-manager || operations-manager --version

2. No fixed release: DOWNGRADE to a release before 9.20.0 (Debian / Ubuntu)

apt-cache madison operations-manager sudo apt install operations-manager=<VERSION_BEFORE_9.20.0> sudo apt-mark hold operations-manager

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list operations-manager sudo dnf downgrade operations-manager-<VERSION_BEFORE_9.20.0> sudo dnf versionlock add operations-manager

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-2016-4373?

operations manager: upgrade to newer than 9.21.120; operations manager: upgrade to newer than 9.21.120; operations manager: upgrade to newer than 9.21.120. Exact commands for each OS are on this page.

Is CVE-2016-4373 being exploited?

CVE-2016-4373 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-2016-4373 affect?

CVE-2016-4373 affects operations manager, operations manager, operations manager. Severity is critical (CVSS 9.8). The AdminUI in HPE Operations Manager (OM) before 9.21.130 on Linux, Unix, and Solaris allows remote attackers to execute arbitrary commands via a crafted serialized Java object, related to the Apache Commons Collections (ACC) library.

How urgent is CVE-2016-4373?

Priority 67/100. Critical severity; EPSS top 9%: very likely to be exploited; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Java vulnerabilities

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References

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