Cyber Resilience

CVE-2021-31986

Medium

Published: 05 October 2021

Published
05 October 2021
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 6.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:H
EPSS Score 0.0058 69.4th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-31986 is a medium-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Axis Axis Os. Its CVSS base score is 6.8 (Medium).

Operationally, ranked in the top 30.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

User controlled parameters related to SMTP notifications are not correctly validated. This can lead to a buffer overflow resulting in crashes and data leakage.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

axis
axis os
≤ 10.7
axis
axis os 2016
≤ 6.50.5.5
axis
axis os 2018
≤ 8.40.4.3
axis
axis os 2020
≤ 9.80.3.5

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

References