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CVE-2023-28382: Directory traversal vulnerability in ESS REC Agent Server Edition series allows an authenticated attacker to v

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This month
HIGH 8.1UPGRADEUPGRADEUPGRADE

CVE-2023-28382 is a high-severity flaw (CVSS 8.1) affecting ess rec, ess rec, ess rec. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Directory traversal vulnerability in ESS REC Agent Server Edition series allows an authenticated attacker to view or alter an arbitrary file on the server. Affected products and versions are as follows: ESS REC Agent Server Edition for Linux V1.0.0 to V1.4.3, ESS REC Agent Server Edition for Solaris V1.1.0 to V1.4.0, ESS REC Agent Server Edition for HP-UX V1.1.0 to V1.4.0, and ESS REC Agent Server Edition for AIX V1.2.0 to V1.4.1

Why this priority

  • High severity

A fixed release or distro patch exists.

Risk facts

CVSS score8.1 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.9% (top 40%)
CISA exploited listNo
WeaknessCWE-22
Published2023-05-26
Last modified2026-06-17
Publisher (CNA): JPCERT/CC · Vendor: et-x

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

Am I affected?

Timeline

et-x ess rec UPGRADE
Affected: >= 1.0.0 and <= 1.4.3
Fixed in: newer than 1.4.3
Safe to downgrade to: a release before 1.0.0
1. Check installed version
apt-cache policy ess-rec || rpm -q ess-rec || ess-rec --version
2. UPGRADE to newer than 1.4.3 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade ess-rec
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade ess-rec
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 1.0.0 (Debian / Ubuntu)
apt-cache madison ess-rec sudo apt install ess-rec=<VERSION_BEFORE_1.0.0> sudo apt-mark hold ess-rec
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list ess-rec sudo dnf downgrade ess-rec-<VERSION_BEFORE_1.0.0> sudo dnf versionlock add ess-rec
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.
et-x ess rec UPGRADE
Affected: >= 1.1.0 and <= 1.4.0
Fixed in: newer than 1.4.0
Safe to downgrade to: a release before 1.1.0
1. Check installed version
apt-cache policy ess-rec || rpm -q ess-rec || ess-rec --version
2. UPGRADE to newer than 1.4.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade ess-rec
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade ess-rec
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 1.1.0 (Debian / Ubuntu)
apt-cache madison ess-rec sudo apt install ess-rec=<VERSION_BEFORE_1.1.0> sudo apt-mark hold ess-rec
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list ess-rec sudo dnf downgrade ess-rec-<VERSION_BEFORE_1.1.0> sudo dnf versionlock add ess-rec
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.
et-x ess rec UPGRADE
Affected: >= 1.1.0 and <= 1.4.0
Fixed in: newer than 1.4.0
Safe to downgrade to: a release before 1.1.0
1. Check installed version
apt-cache policy ess-rec || rpm -q ess-rec || ess-rec --version
2. UPGRADE to newer than 1.4.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade ess-rec
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade ess-rec
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 1.1.0 (Debian / Ubuntu)
apt-cache madison ess-rec sudo apt install ess-rec=<VERSION_BEFORE_1.1.0> sudo apt-mark hold ess-rec
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list ess-rec sudo dnf downgrade ess-rec-<VERSION_BEFORE_1.1.0> sudo dnf versionlock add ess-rec
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.
et-x ess rec UPGRADE
Affected: >= 1.2.0 and <= 1.4.1
Fixed in: newer than 1.4.1
Safe to downgrade to: a release before 1.2.0
1. Check installed version
apt-cache policy ess-rec || rpm -q ess-rec || ess-rec --version
2. UPGRADE to newer than 1.4.1 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade ess-rec
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade ess-rec
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 1.2.0 (Debian / Ubuntu)
apt-cache madison ess-rec sudo apt install ess-rec=<VERSION_BEFORE_1.2.0> sudo apt-mark hold ess-rec
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list ess-rec sudo dnf downgrade ess-rec-<VERSION_BEFORE_1.2.0> sudo dnf versionlock add ess-rec
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-2023-28382?

ess rec: upgrade to newer than 1.4.3; ess rec: upgrade to newer than 1.4.0; ess rec: upgrade to newer than 1.4.0. Exact commands for each OS are on this page.

Is CVE-2023-28382 being exploited?

CVE-2023-28382 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-2023-28382 affect?

CVE-2023-28382 affects ess rec, ess rec, ess rec. Severity is high (CVSS 8.1). Directory traversal vulnerability in ESS REC Agent Server Edition series allows an authenticated attacker to view or alter an arbitrary file on the server. Affected products and versions are as follows: ESS REC Agent Server Edition for Linu

How urgent is CVE-2023-28382?

Priority 43/100. High severity

References

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