Home/CVE/SecureCRT before 8.7.2 allows remote attackers to execute arbitrary code via an Integer Overflow and a Buffer Overflow b
CVE

CVE-2020-12651

SecureCRT before 8.7.2 allows remote attackers to execute arbitrary code via an Integer Overflow and a Buffer Overflow b

SecureCRT before 8.7.2 allows remote attackers to execute arbitrary code via an Integer Overflow and a Buffer Overflow because a banner can trigger a line number to CSI functions that exceeds INT_MAX.

CRITICAL · CVSS 9.8 EPSS 0.08487
Act now
  • EPSS percentile: top 7% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules15 YARA rules0
⬡

Weakness Classification

CWE-190Integer Overflow or Wraparound
▤

Affected Products & Versions

2
vandyke securecrt< 8.7.2
vandyke securecrt< 2.4
⚠

Public Exploits & PoCs

1
pocbugs.chromium.org · detail?id=2033bugs.chromium.org
◈

Sigma Hunt Rules

15
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productcriticalHackTool - Windows Credential Editor (WCE) Execution
productcriticalWindows Credential Editor Registry
producthighOpenCanary - MSSQL Login Attempt Via Windows Authentication
producthighWindows LAPS Credential Dump From Entra ID
producthighTamper Windows Defender - PSClassic
producthighTamper Windows Defender Remove-MpPreference - ScriptBlockLogging
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD15 May 2020 · 06:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://twitter.com/taviso/status/1261079774190919680Third Party Advisory
https://www.vandyke.com/products/securecrt/history.txtRelease NotesVendor Advisory
https://www.vandyke.com/support/advisory/index.htmlVendor Advisory
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