How severe is CVE-2023-40458?

CVE-2023-40458 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-40458 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-40458?

CVE-2023-40458 affects Sierrawireless Aleos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-40458?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-40458 published?

CVE-2023-40458 was published on 2023-11-29 and last updated on 2026-06-17.

CVE-2023-40458

CVE-2023-40458 is a high-severity vulnerability in Sierrawireless Aleos with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-835.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-835
Affected product: Sierrawireless Aleos
Published: 2023-11-29
Last modified: 2026-06-17

Description

Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in Sierra Wireless, Inc ALEOS could potentially allow a remote attacker to trigger a Denial of Service (DoS) condition for ACEManager without impairing other router functions. This condition is cleared by restarting the device.

Frequently asked questions

What is CVE-2023-40458?: Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in Sierra Wireless, Inc ALEOS could potentially allow a remote attacker to trigger a Denial of Service (DoS) condition for ACEManager without impairing other router functions. This condition is cleared by restarting the device.
How severe is CVE-2023-40458?: CVE-2023-40458 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-40458 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-40458?: CVE-2023-40458 affects Sierrawireless Aleos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-40458?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-40458 published?: CVE-2023-40458 was published on 2023-11-29 and last updated on 2026-06-17.

References

https://source.sierrawireless.com/resources/security-bulletins/sierra-wireless-technical-bulletin---swi-psa-2023-006/#sthash.5ZcnyPM1.dpbs

Affected products (1)

cpe:2.3:o:sierrawireless:aleos:*:*:*:*:*:*:*:*

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