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CVE-2023-40464

20
FAUCET Score

CVE-2023-40464 describes a medium-severity vulnerability in several versions of ALEOS, including ALEOS 4.16.0, and various Sierra Wireless router models. The flaw stems from the use of a hardcoded SSL certificate and private key, which, if compromised, could enable a man-in-the-middle (MitM) attack between ACEManager clients and servers. This vulnerability has a CVSS score of 6.8, indicating a high impact on confidentiality and integrity with high attack complexity, and requires low privileges. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or inclusion in CISA's KEV catalog, though it has received limited community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.16.0CPE matchmatch criteria
cpe:2.3:o:sierrawireless:aleos:*:*:*:*:*:*:*:*
>= 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

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.30%
Probability of exploitation in next 30 days
EPSS Percentile
21.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0030 is in the 21st percentile among its peer group of 1,425 CVEs.

Social Chatter

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

source.sierrawireless.com / resources/security-bulletins/sierra-wireless-technical-bulletin---swi-psa-2023-006
Vendor Advisory