CVE-2023-32752: L7 Networks InstantScan IS-8000 & InstantQoS IQ-8000’s file uploading function does not restrict upload of fil

This month

CRITICAL 9.8REMOTEDOWNGRADEDOWNGRADE

CVE-2023-32752 is a critical-severity flaw (CVSS 9.8) affecting instantqos, instantscan. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

L7 Networks InstantScan IS-8000 & InstantQoS IQ-8000’s file uploading function does not restrict upload of file with dangerous type. An unauthenticated remote attacker can exploit this vulnerability to upload and run arbitrary executable files to perform arbitrary system commands or disrupt service.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 39%)
CISA exploited list	No
Weakness	CWE-434
Published	2023-06-16
Last modified	2026-06-17

Publisher (CNA): TWCERT/CC · Vendor: l7-networks

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

Am I affected?

Timeline

2023-06-16 04:15 UTCPublished CVE record published
2026-06-17 05:59 UTCUpdated Record last modified

l7-networks instantqos DOWNGRADE

Affected: iq-8000

Fixed in: no fixed release known

Safe to downgrade to: a release before iq-8000

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before iq-8000 (Debian / Ubuntu)

apt-cache madison instantqos sudo apt install instantqos=<VERSION_BEFORE_iq-8000> sudo apt-mark hold instantqos

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

dnf --showduplicates list instantqos sudo dnf downgrade instantqos-<VERSION_BEFORE_iq-8000> sudo dnf versionlock add instantqos

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.

l7-networks instantscan DOWNGRADE

Affected: is-8000

Fixed in: no fixed release known

Safe to downgrade to: a release before is-8000

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before is-8000 (Debian / Ubuntu)

apt-cache madison instantscan sudo apt install instantscan=<VERSION_BEFORE_is-8000> sudo apt-mark hold instantscan

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

dnf --showduplicates list instantscan sudo dnf downgrade instantscan-<VERSION_BEFORE_is-8000> sudo dnf versionlock add instantscan

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-2023-32752?

instantqos: downgrade or apply the listed mitigation; instantscan: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-32752 being exploited?

CVE-2023-32752 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-2023-32752 affect?

CVE-2023-32752 affects instantqos, instantscan. Severity is critical (CVSS 9.8). L7 Networks InstantScan IS-8000 & InstantQoS IQ-8000’s file uploading function does not restrict upload of file with dangerous type. An unauthenticated remote attacker can exploit this vulnerability to upload and run arbitrary executable fi

How urgent is CVE-2023-32752?

Priority 55/100. Critical severity; Remotely exploitable, no login, no user action

References

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