CVE-2023-40459
A public proof of concept exists; no exploitation attested.
- Published2023-12-04
- WeaknessCWE-476
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
The ACEManager component of ALEOS 4.16 and earlier does not adequately perform input sanitization during authentication, which could potentially result in a Denial of Service (DoS) condition for ACEManager without impairing other router functions. ACEManager recovers from the DoS condition by restarting within ten seconds of becoming unavailable.
Timeline
dates in UTC- 2023-12-0423:15CVE publishedNVD
- 2026-10-2319:23First public proof of conceptPoC-in-GitHub
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-40459?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-40459?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 4.16 | ≤ 4.16.0 | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
Sierra Wireless AirLink with ALEOS firmware
Sierra Wireless AirLink ALEOS firmware: <4.9.9 · Sierra Wireless AirLink ALEOS firmware: <4.17.0
Fix
- Vendor fix CISA ICSA-23-341-06 · 1 productAirLink ALEOS firmware: Version 4.9.9
- Vendor fix CISA ICSA-23-341-06 · 1 productAirLink ALEOS firmware: Version 4.17.0
- Mitigation from the vendor CISA ICSA-23-341-06 · 2 productsSierra Wireless has released the following software fixes and recommends users update their devices:
- Mitigation from the vendor CISA ICSA-23-341-06 · 2 productsFor more information, please see Sierra Wireless' security advisory.
Advisories and patches
- source.sierrawireless.comVendor Advisory
Detection
read 2026-10-23 19:23 UTC- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- 2 repositories, unverifiedmajidmc2/CVE-2023-404597h3w4lk3r/CVE-2023-40459 PoC-in-GitHub
Sources
- CISA-ADPSSVC decisionnone2023-12-23
- OpenCVESSVC decisionnone—
- CNACVSS 3.17.5read 2026-10-23
- NVDCVSS 3.17.5read 2026-10-23
- CNAweakness (CWE)CWE-476read 2026-10-23
- NVDweakness (CWE)CWE-476read 2026-10-23
- FIRST EPSSEPSS score2.3 %2026-10-22
- PoC-in-GitHubproof of concept2read 2026-10-23
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Published
- 2023-12-04
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2023-40459?
Is CVE-2023-40459 actively exploited?
What is the CVSS score for CVE-2023-40459?
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