2026-02-06 23:14CVE-2020-37166VulnCheck
PUBLISHED5.2CWE-120

AbsoluteTelnet 11.12 - 'SSH2/username' Denial of Service

AbsoluteTelnet 11.12 contains a denial of service vulnerability in the SSH2 username input field that allows local attackers to crash the application. Attackers can overwrite the username field with a 1000-byte buffer, causing the application to become unresponsive and terminate.

Problem type

Affected products

Celestial Software

AbsoluteTelnet

11.12 - AFFECTED

References

GitHub Security Advisories

GHSA-vp6j-grx7-8jmx

AbsoluteTelnet 11.12 contains a denial of service vulnerability in the SSH2 username input field...

https://github.com/advisories/GHSA-vp6j-grx7-8jmx

AbsoluteTelnet 11.12 contains a denial of service vulnerability in the SSH2 username input field that allows local attackers to crash the application. Attackers can overwrite the username field with a 1000-byte buffer, causing the application to become unresponsive and terminate.

JSON source

https://cveawg.mitre.org/api/cve/CVE-2020-37166
Click to expand
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    "assignerShortName": "VulnCheck",
    "dateUpdated": "2026-02-06T23:14:12.943Z",
    "dateReserved": "2026-02-06T12:29:50.763Z",
    "datePublished": "2026-02-06T23:14:12.943Z",
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        "dateUpdated": "2026-02-06T23:14:12.943Z"
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      "datePublic": "2020-02-05T00:00:00.000Z",
      "title": "AbsoluteTelnet 11.12 - 'SSH2/username' Denial of Service",
      "descriptions": [
        {
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          "value": "AbsoluteTelnet 11.12 contains a denial of service vulnerability in the SSH2 username input field that allows local attackers to crash the application. Attackers can overwrite the username field with a 1000-byte buffer, causing the application to become unresponsive and terminate."
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      "problemTypes": [
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          "url": "https://www.celestialsoftware.net/",
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        {
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            "attackVector": "LOCAL",
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            "scope": "UNCHANGED",
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            "baseScore": 6.2,
            "baseSeverity": "MEDIUM"
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      "credits": [
        {
          "lang": "en",
          "value": "chuyreds",
          "type": "finder"
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