CVE-2021-39244 json
Authenticated Semi-Blind Command Injection (via Parameter Injection) exists on Altus Nexto, Nexto Xpress, and Hadron Xtorm devices via the…
published 2021-08-23 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-25606
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.5%
- EPSS 3.5% chance of exploitation in 30 days, percentile 89%
- public exploits
- 0
- none known
Summary
Authenticated Semi-Blind Command Injection (via Parameter Injection) exists on Altus Nexto, Nexto Xpress, and Hadron Xtorm devices via the getlogs.cgi tcpdump feature. This affects Nexto NX3003 1.8.11.0, Nexto NX3004 1.8.11.0, Nexto NX3005 1.8.11.0, Nexto NX3010 1.8.3.0, Nexto NX3020 1.8.3.0, Nexto NX3030 1.8.3.0, Nexto NX5100 1.8.11.0, Nexto NX5101 1.8.11.0, Nexto NX5110 1.1.2.8, Nexto NX5210 1.1.2.8, Nexto Xpress XP300 1.8.11.0, Nexto Xpress XP315 1.8.11.0, Nexto Xpress XP325 1.8.11.0, Nexto Xpress XP340 1.8.11.0, and Hadron Xtorm HX3040 1.7.58.0.
Exploit prediction
3.48% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- seclists.org https://seclists.org/fulldisclosure/2021/Aug/21 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 9.0 | AV:N/AC:L/Au:S/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-78 Improper Neutralization of Special Elements used in an OS Command
References
-
seclists.org
/fulldisclosure/2021/Aug/21
exploit, mailing-list, third-party-advisory
-
altus.com.br
/
vendor-advisory
Sources
- CVE List CVE-2021-39244
- NVD CVE-2021-39244
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.