CVE-2021-31986
User controlled parameters related to SMTP notifications are not correctly validated. This can...
User controlled parameters related to SMTP notifications are not correctly validated. This can lead to a buffer overflow resulting in crashes and data leakage.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
User controlled parameters related to SMTP notifications are not correctly validated. This can lead to a buffer overflow resulting in crashes and data leakage.
- Record
CVE-2021-31986- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:H - CVSS 2.0
- 4.0 Medium
AV:N/AC:H/Au:N/C:P/I:N/A:P - Weakness
- CWE-122, CWE-787
- Updated
- 2026-11-02
CVE List No score
User controlled parameters related to SMTP notifications are not correctly validated. This can lead to a buffer overflow resulting in crashes and data leakage.
- Record
CVE-2021-31986- Weakness
- CWE-122
- Updated
- 2026-11-02
EUVDEUVD-2021-18858 No score
User controlled parameters related to SMTP notifications are not correctly validated. This can lead to a buffer overflow resulting in crashes and data leakage.
- Record
EUVD-2021-18858- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-qx7f-84h6-wf98
User controlled parameters related to SMTP notifications are not correctly validated. This can...
User controlled parameters related to SMTP notifications are not correctly validated. This can lead to a buffer overflow resulting in crashes and data leakage.
- Record
GHSA-qx7f-84h6-wf98- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:H - Weakness
- CWE-122, CWE-787
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-31986 is a medium vulnerability (CVSS 6.8) in Axis Os, published October 5, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.80%, the 57th percentile. No source names a fixed version.