CVE-2023-4400: A password management vulnerability in Skyhigh Secure Web Gateway (SWG) in main releases 11.x prior to 11.2.1

Routine

MEDIUM 6.2UPGRADE

CVE-2023-4400 is a medium-severity flaw (CVSS 6.2) affecting secure web gateway. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A password management vulnerability in Skyhigh Secure Web Gateway (SWG) in main releases 11.x prior to 11.2.14, 10.x prior to 10.2.25 and controlled release 12.x prior to 12.2.1, allows some authentication information stored in configuration files to be extracted through SWG REST API. This was possible due to SWG storing the password in plain text in some configuration files.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.2 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.4% (top 71%)
CISA exploited list	No
Weakness	CWE-256, CWE-312
Published	2023-09-13
Last modified	2026-06-17

Publisher (CNA): Trellix · Vendor: skyhighsecurity

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

Am I affected?

Timeline

2023-09-13 07:15 UTCPublished CVE record published
2026-06-17 06:37 UTCUpdated Record last modified

skyhighsecurity secure web gateway UPGRADE

Affected: >= 10.0.0 and < 10.2.25 · >= 11.0.0 and < 11.2.14 · >= 12.0.0 and < 12.2.1

Fixed in: 10.2.25, 11.2.14, 12.2.1

Safe to downgrade to: a release before 10.0.0

1. Check installed version

apt-cache policy secure-web-gateway || rpm -q secure-web-gateway || secure-web-gateway --version

2. UPGRADE to 10.2.25 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade secure-web-gateway

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade secure-web-gateway

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 10.0.0 (Debian / Ubuntu)

apt-cache madison secure-web-gateway sudo apt install secure-web-gateway=<VERSION_BEFORE_10.0.0> sudo apt-mark hold secure-web-gateway

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

dnf --showduplicates list secure-web-gateway sudo dnf downgrade secure-web-gateway-<VERSION_BEFORE_10.0.0> sudo dnf versionlock add secure-web-gateway

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-2023-4400?

secure web gateway: upgrade to 10.2.25, 11.2.14, 12.2.1. Exact commands for each OS are on this page.

Is CVE-2023-4400 being exploited?

CVE-2023-4400 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-2023-4400 affect?

CVE-2023-4400 affects secure web gateway. Severity is medium (CVSS 6.2). A password management vulnerability in Skyhigh Secure Web Gateway (SWG) in main releases 11.x prior to 11.2.14, 10.x prior to 10.2.25 and controlled release 12.x prior to 12.2.1, allows some authentication information stored in configurati

How urgent is CVE-2023-4400?

Priority 29/100. No elevated risk signals yet.

Related CVEs

CVE-2024-6398 MEDIUM 4.3 UPGRADE An information disclosure vulnerability in SWG in versions 12.x prior to 12.2.10 and 11.x prior to 11.2.24 all
CVE-2024-3378 MEDIUM 4.3 UPGRADE A vulnerability has been found in iboss Secure Web Gateway up to 10.1 and classified as problematic

References

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