Buffer overflow in Axis OS
CVE-2021-31986
User controlled parameters related to SMTP notifications are not correctly validated. This can lead to a buffer overflow resulting in crashes and data leakage.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.008 (55.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Axis OS
- Axis OS 2016
- Axis OS 2018
- Axis OS 2020
- Axis Communications Ab OS — versions AXIS OS 6.40 or later
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.axis.com/files/tech_notes/CVE-2021-31986.pdf (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-31986?
- CVE-2021-31986 is a medium-severity vulnerability in Axis OS, classified under Heap-based Buffer Overflow. CVSS score: 6.8/10. Published 2021-10-05.
- How severe is CVE-2021-31986?
- Medium severity. CVSS v3 base score is 6.8 out of 10.
- Is CVE-2021-31986 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.