CVE-2020-18900 json
A heap-based buffer overflow in the libexe_io_handle_read_coff_optional_header function of libyal libexe before 20181128.
published 2021-08-19 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-10811
- cvss
- 3.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 25%
- public exploits
- 0
- none known
Summary
A heap-based buffer overflow in the libexe_io_handle_read_coff_optional_header function of libyal libexe before 20181128. NOTE: the vendor has disputed this as described in libyal/libexe issue 1 on GitHub
Patch / fix
- libexe_project libexe 20181128
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.32% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/libyal/libexe/issues/1 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 3.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |
| NVD | 3.1 | 3.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |
| CNA | 3.1 | 3.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |
| NVD | 2.0 | 1.9 | AV:L/AC:M/Au:N/C:N/I:N/A:P |
Affected products
- libexe_project libexe
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
github.com
/libyal/libexe/issues/1
exploit, issue-tracking, third-party-advisory
Sources
- CVE List CVE-2020-18900
- NVD CVE-2020-18900
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