CVE-2024-23923: Alpine Halo9 prh_l2_sar_data_ind Use-After-Free Remote Code Execution Vulnerability

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HIGH 8.8MITIGATE

CVE-2024-23923 is a high-severity flaw (CVSS 8.8) affecting ilx-f509 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Alpine Halo9 prh_l2_sar_data_ind Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Alpine Halo9 devices. Authentication is not required to exploit this vulnerability. The specific flaw exists within the prh_l2_sar_data_ind function. The issue results from the lack of validating the existence of an object prior to performing operations on

Why this priority

High severity

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-416
Published	2024-09-28
Last modified	2026-06-17

Publisher (CNA): Automotive Security Research Group (ASRG) · Vendor: alpsalpine

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

Am I affected?

Timeline

2024-09-28 07:15 UTCPublished CVE record published
2026-06-17 07:13 UTCUpdated Record last modified

alpsalpine ilx-f509 firmware MITIGATE

Affected: 6.0.000

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.0.000

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2024-23923?

ilx-f509 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-23923 being exploited?

CVE-2024-23923 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-2024-23923 affect?

CVE-2024-23923 affects ilx-f509 firmware. Severity is high (CVSS 8.8). Alpine Halo9 prh_l2_sar_data_ind Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Alpine Halo9 devices. Authentication is not req

How urgent is CVE-2024-23923?

Priority 45/100. High severity

Related CVEs

CVE-2024-23963 HIGH 8.0 MITIGATE This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Al
CVE-2024-23962 MEDIUM 5.3 MITIGATE This vulnerability allows remote attackers to disclose sensitive information on affected installations of Alpi
CVE-2024-23961 MEDIUM 6.8 MITIGATE Alpine Halo9 UPDM_wemCmdUpdFSpeDecomp Command Injection Remote Code Execution Vulnerability
CVE-2024-23960 MEDIUM 4.6 MITIGATE Alpine Halo9 Improper Verification of Cryptographic Signature Vulnerability
CVE-2024-23935 HIGH 8.0 MITIGATE Alpine Halo9 DecodeUTF7 Stack-based Buffer Overflow Remote Code Execution Vulnerability

References

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