Vulnerability-Lookup

GHSA-8Q7Q-H33W-FFJ5

Vulnerability from github – Published: 2026-01-29 15:30 – Updated: 2026-01-29 15:30

Details

Mocha Telnet Lite for iOS 4.2 contains a denial of service vulnerability that allows attackers to crash the application by manipulating the user configuration input. Attackers can overwrite the 'User' field with 350 bytes of repeated characters to trigger an application crash and prevent normal functionality.

Severity ?

7.5 (High)


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

4.6 (Medium)


                  
                    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2020-36995"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-120"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-29T15:16:05Z",
    "severity": "MODERATE"
  },
  "details": "Mocha Telnet Lite for iOS 4.2 contains a denial of service vulnerability that allows attackers to crash the application by manipulating the user configuration input. Attackers can overwrite the \u0027User\u0027 field with 350 bytes of repeated characters to trigger an application crash and prevent normal functionality.",
  "id": "GHSA-8q7q-h33w-ffj5",
  "modified": "2026-01-29T15:30:28Z",
  "published": "2026-01-29T15:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-36995"
    },
    {
      "type": "WEB",
      "url": "https://apps.apple.com/us/app/telnet-lite/id286893976"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/48728"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/mocha-telnet-lite-for-ios-user-denial-of-service"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2020-36995 (GCVE-0-2020-36995)

Vulnerability from cvelistv5 – Published: 2026-01-29 14:28 – Updated: 2026-01-29 16:03

Title

Mocha Telnet Lite for iOS 4.2 - 'User' Denial of Service

Summary

Severity ?

0 (None)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

7.5 (High)


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

CWE

CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Assigner

VulnCheck

References

URL

Tags

	https://www.exploit-db.com/exploits/48728	exploit
	https://apps.apple.com/us/app/telnet-lite/id286893976	product
	https://www.vulncheck.com/advisories/mocha-telnet…	third-party-advisory

Impacted products

	Vendor	Product	Version
	telnet-lite	Mocha Telnet Lite for iOS	Affected: 4.2

Credits

Luis Martinez

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2020-36995",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-29T16:02:29.153029Z",
                "version": "2.0.3"
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          "vendor": "telnet-lite",
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            }
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      ],
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 0,
            "baseSeverity": "NONE",
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            "subIntegrityImpact": "NONE",
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            "valueDensity": "NOT_DEFINED",
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            "vulnAvailabilityImpact": "LOW",
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            "confidentialityImpact": "HIGH",
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            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
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          "tags": [
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          "url": "https://www.exploit-db.com/exploits/48728"
        },
        {
          "name": "Official App Store Page for Mocha Telnet Lite",
          "tags": [
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          ],
          "url": "https://apps.apple.com/us/app/telnet-lite/id286893976"
        },
        {
          "name": "VulnCheck Advisory: Mocha Telnet Lite for iOS 4.2 - \u0027User\u0027 Denial of Service",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/mocha-telnet-lite-for-ios-user-denial-of-service"
        }
      ],
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      "x_generator": {
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  "cveMetadata": {
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-8Q7Q-H33W-FFJ5

CVE-2020-36995 (GCVE-0-2020-36995)

Tags

Sightings

Nomenclature