CVE-2020-12651 json
SecureCRT before 8.7.2 allows remote attackers to execute arbitrary code via an Integer Overflow and a Buffer Overflow because a banner can…
published 2020-05-15 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-4950
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 6.6%
- EPSS 6.6% chance of exploitation in 30 days, percentile 93%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- vandyke securecrt 2.4, 8.7.2
Exploit prediction
6.60% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- bugs.chromium.org https://bugs.chromium.org/p/project-zero/issues/detail?id=2033 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-190 Integer Overflow or Wraparound
References
-
bugs.chromium.org
/p/project-zero/issues/detail?id=2033
exploit, third-party-advisory
-
vandyke.com
/support/advisory/index.html
vendor-advisory
-
vandyke.com
/products/securecrt/history.txt
release-notes, vendor-advisory
-
twitter.com
/taviso/status/1261079774190919680
third-party-advisory
Sources
- CVE List CVE-2020-12651
- NVD CVE-2020-12651
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.