CVE-2023-36483MAS (a Carrier brand) MASmobile Classic Authorization Bypass
- 6.5MediumCVSS base score
- 0.49%Exploitation in 30 daysEPSS · top 57% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- YesPublic exploitsa reference or SSVC says so
Description
Authorization bypass can be achieved by session ID prediction in MASmobile Classic Android version 1.16.18 and earlier and MASmobile Classic iOS version 1.7.24 and earlier which allows remote attackers to retrieve sensitive data including customer data, security system status, and event history.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: a proof of concept is public.
Timeline
ID reserved
By Carrier
- 9 months later
· 9 months later
Published
- 6 months later
· 6 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CarrierCNA (assigner) | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| NVDNVD · Modified | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.49% · top 57% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Affected products
MAS (a Carrier brand) · MASmobile Classic
- affected 1 – ≤ 1.16.18
MAS (a Carrier brand) · MASmobile Classic
- affected 1 – ≤ 1.7.24
MAS (a Carrier brand) · MAS ASP.Net Services
- affected 1 – ≤ 1.9
What to do
Solution: 1. Uninstall MASmobile Classic Services - These services are installed and configured manually in IIS within a virtual directory. To uninstall, unpublish the services in IIS and remove the service files. All versions (v1.7, 1.8, and 1.9) were discontinued. 2. Remove the MASmobile Classic app from Android and iOS devices. All versions (v1.x.x) were discontinued and no longer available in the app stores (Play and AppStore). 3. Contact MAS to arrange the installation of MASterMind EX Services (v6.46 or later). These services do not run under IIS and must be configured in coordination with the customer. 4. Install MASmobile app from Play or AppStore (v2.x.x). This is not an upgrade to MASmobile Classic; it is a different app.
References
References1
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2023-40432 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-36483)Record last updated .