Security readout for executives and security teams
Plain-English summary
CVE-2020-36995 affects Mocha Telnet Lite for iOS version 4.2. Public reporting says malformed or oversized input in the app’s user configuration can crash the application. The main business impact is loss of availability for users relying on this iOS Telnet client, not confirmed device takeover or broader network compromise.
Executive priority
Prioritize remediation where this app supports operational access or critical administration. For most organizations, urgency is bounded because the known impact is an app crash and sources do not confirm active exploitation. Remove unsupported or unnecessary installations to reduce avoidable risk.
Technical view
The issue is described as a CWE-120 buffer-related flaw in the 'User' configuration field of Mocha Telnet Lite for iOS 4.2. The bundled CVSS is 7.5, but the description centers on application denial of service. ExploitDB is referenced, indicating public exploit information exists; no KEV listing or cited source confirms active exploitation.
Likely exposure
Exposure is likely limited to environments with Mocha Telnet Lite for iOS 4.2 installed and used. Organizations should verify via mobile device management, App Store records, or user software inventories. The sources do not identify other affected versions or platforms.
Exploitation context
Public exploit information exists, but the provided sources do not establish active exploitation in the wild. The described impact is crashing the application through user-configuration input manipulation. Treat this as higher priority where staff depend on the app for operational remote access.
Researcher notes
Evidence is narrow: one affected product/version is listed, and the public description focuses on a crash via the 'User' field. The CVSS vector includes confidentiality impact, which is not explained by the provided description. Do not assume broader compromise without additional vendor or CVE detail.
Mitigation direction
- Identify devices running Mocha Telnet Lite for iOS 4.2.
- Check the vendor/App Store page for current versions or vendor guidance.
- Remove or replace the app where business use is not required.
- Use alternative supported remote-access tools if the app cannot be validated safe.
- Monitor advisories for a named fixed version or vendor statement.
Validation and detection
- Review MDM inventory for Mocha Telnet Lite installations.
- Confirm installed app version on managed iOS devices.
- Check whether business workflows depend on this Telnet client.
- Document whether version 4.2 remains in use.
- Track CVE, VulnCheck, and App Store references for updates.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-120: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2020-36995 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-48728CVE reference · exploit
- Official App Store Page for Mocha Telnet LiteCVE reference · product
- VulnCheck Advisory: Mocha Telnet Lite for iOS 4.2 - 'User' Denial of ServiceCVE reference · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.