AceManager DOS Vulnerability

published 2023-11-29 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-45029

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.8%; EPSS 0.8% chance of exploitation in 30 days, percentile 57%
public exploits: 0; none known

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.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-23-341-06 updated 2023-12-07 cvss 7.5

Sierra Wireless AirLink with ALEOS firmware

Sierra Wireless AirLink ALEOS firmware <4.9.9, <4.17.0
affected: vendor fix, mitigation “Sierra Wireless has released the following software fixes and recommends users update their devices:” source.sierrawireless.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

0.82% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

sierrawireless ALEOS

Classification

Weakness

CWE-835 Loop with Unreachable Exit Condition

References

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

Sources

CVE List CVE-2023-40458
NVD CVE-2023-40458

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary