CVE-2021-31987 json
A user controlled parameter related to SMTP test functionality is not correctly validated making it possible to bypass blocked network reci…
published 2021-10-05 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-18859
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 59%
- public exploits
- 0
- none known
Summary
A user controlled parameter related to SMTP test functionality is not correctly validated making it possible to bypass blocked network recipients.
Patch / fix
- axis axis_os 10.8
- axis axis_os_2016 6.50.5.5
- axis axis_os_2018 8.40.4.3
- axis axis_os_2020 9.80.3.5
Exploit prediction
0.89% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 5.1 | AV:N/AC:H/Au:N/C:P/I:P/A:P |
Affected products
- Axis Communications AB AXIS OS
Classification
- Weakness
-
- CWE-1286 Improper Validation of Syntactic Correctness of Input
References
-
axis.com
/files/tech_notes/CVE-2021-31987.pdf
vendor-advisory
Sources
- CVE List CVE-2021-31987
- NVD CVE-2021-31987
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