CVE-2024-5590: A vulnerability was found in Netentsec NS-ASG Application Security Gateway 6.3

Routine

MEDIUM 6.3DOWNGRADE

CVE-2024-5590 is a medium-severity flaw (CVSS 6.3) affecting application security gateway. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was found in Netentsec NS-ASG Application Security Gateway 6.3. It has been declared as critical. This vulnerability affects unknown code of the file /protocol/iscuser/uploadiscuser.php of the component JSON Content Handler. The manipulation of the argument messagecontent leads to sql injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-89
Published	2024-06-03
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: netentsec

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

Am I affected?

Timeline

2024-06-03 01:15 UTCPublished CVE record published
2026-06-17 08:16 UTCUpdated Record last modified

netentsec application security gateway DOWNGRADE

Affected: 6.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.3

1. Check installed version

apt-cache policy application-security-gateway || rpm -q application-security-gateway || application-security-gateway --version

2. No fixed release: DOWNGRADE to a release before 6.3 (Debian / Ubuntu)

apt-cache madison application-security-gateway sudo apt install application-security-gateway=<VERSION_BEFORE_6.3> sudo apt-mark hold application-security-gateway

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

dnf --showduplicates list application-security-gateway sudo dnf downgrade application-security-gateway-<VERSION_BEFORE_6.3> sudo dnf versionlock add application-security-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-2024-5590?

application security gateway: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-5590 being exploited?

CVE-2024-5590 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-2024-5590 affect?

CVE-2024-5590 affects application security gateway. Severity is medium (CVSS 6.3). A vulnerability was found in Netentsec NS-ASG Application Security Gateway 6.3. It has been declared as critical. This vulnerability affects unknown code of the file /protocol/iscuser/uploadiscuser.php of the component JSON Content Handler.

How urgent is CVE-2024-5590?

Priority 39/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2024-6007 MEDIUM 6.3 DOWNGRADE A vulnerability classified as critical has been found in Netentsec NS-ASG Application Security Gateway 6.3
CVE-2024-5773 MEDIUM 6.3 DOWNGRADE A vulnerability, which was classified as critical, was found in Netentsec NS-ASG Application Security Gateway
CVE-2024-5772 MEDIUM 6.3 DOWNGRADE A vulnerability, which was classified as critical, has been found in Netentsec NS-ASG Application Security Gat
CVE-2024-5589 MEDIUM 6.3 DOWNGRADE A vulnerability was found in Netentsec NS-ASG Application Security Gateway 6.3
CVE-2024-3458 MEDIUM 6.3 DOWNGRADE A vulnerability classified as critical was found in Netentsec NS-ASG Application Security Gateway 6.3

References

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