PatchTheCVECVE-2020-18900: A heap-based buffer overflow in the libexe_io_handle_read_coff_optional_header function of libyal libexe befor
CVE-2020-18900 is a low-severity flaw (CVSS 3.3) affecting libexe. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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
Why this priority
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 3.3 (Low) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.3% (top 75%) |
| CISA exploited list | No |
| Weakness | CWE-787 |
| Published | 2021-08-19 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2020-18900?
libexe: upgrade to 20181128. Exact commands for each OS are on this page.
Is CVE-2020-18900 being exploited?
CVE-2020-18900 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2020-18900 affect?
CVE-2020-18900 affects libexe. Severity is low (CVSS 3.3). 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
How urgent is CVE-2020-18900?
Priority 23/100. Public exploit reference