CVE-2018-11546
md4c 0.2.5 has a heap-based buffer over-read because md_is_named_entity_contents has an off-by...
md4c 0.2.5 has a heap-based buffer over-read because md_is_named_entity_contents has an off-by-one error.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
md4c 0.2.5 has a heap-based buffer over-read because md_is_named_entity_contents has an off-by-one error.
- Record
CVE-2018-11546- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-125
- Updated
- 2026-11-02
CVE List No score
md4c 0.2.5 has a heap-based buffer over-read because md_is_named_entity_contents has an off-by-one error.
- Record
CVE-2018-11546- Updated
- 2026-11-02
EUVDEUVD-2018-3573 No score
md4c 0.2.5 has a heap-based buffer over-read because md_is_named_entity_contents has an off-by-one error.
- Record
EUVD-2018-3573- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-9g8f-vw7m-ppx7
md4c 0.2.5 has a heap-based buffer over-read because md_is_named_entity_contents has an off-by...
md4c 0.2.5 has a heap-based buffer over-read because md_is_named_entity_contents has an off-by-one error.
- Record
GHSA-9g8f-vw7m-ppx7- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-125
- Updated
- 2026-11-02
OSV
md4c 0.2.5 has a heap-based buffer over-read because md_is_named_entity_contents has an off-by-one error.
- Record
CVE-2018-11546- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-11546 is a critical vulnerability (CVSS 9.8) in Md4c Project Md4c, published May 29, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.57%, the 75th percentile. No source names a fixed version.