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CVE-2023-40462

22
FAUCET Score

CVE-2023-40462 is a Denial of Service (DoS) vulnerability affecting the ACEManager component of ALEOS 4.16 and earlier, impacting products from Debian and Sierra Wireless. The vulnerability stems from a lack of input sanitization during authentication, allowing an unauthenticated attacker to trigger a DoS condition for ACEManager, though the router's core functions remain unimpaired and ACEManager recovers within ten seconds. With a CVSS score of 7.5 (HIGH), this vulnerability is remotely exploitable with low attack complexity, requiring no user interaction. There is currently no public exploit code available, it is not listed in the KEV catalog, and community discussion and media coverage are minimal, with only one article from BleepingComputer.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.16.0CPE matchmatch criteria
cpe:2.3:o:sierrawireless:aleos:*:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
>= 4.10, <= 4.16CPE match
cpe:2.3:o:sierrawireless:aleos:*:*:*:*:*:*:*:*
>= 0, <= 4.9.8CPE match
cpe:2.3:o:sierrawireless:aleos:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.88%
Probability of exploitation in next 30 days
EPSS Percentile
55.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0088 is in the 30th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.debian.org / debian-lts-announce/2023/12/msg00024.html
Mailing ListThird Party Advisory
source.sierrawireless.com / resources/security-bulletins/sierra-wireless-technical-bulletin---swi-psa-2023-006
Vendor Advisory