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Fencer Vulns
medium 5.9

CVE-2024-8256 json

Incorrect Permission Assignment in RutOS based routers and TSWOS based managed switches

published 2024-12-10 22 mo ago modified 2026-06-17 4 mo ago also EUVD-2024-49594

cvss
5.9
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 9%
public exploits
0
none known

Summary

In Teltonika Networks RUTOS devices, running on versions 7.0 to 7.8 (excluding) and TSWOS devices running on versions 1.0 to 1.3 (excluding), due to incorrect permission handling a vulnerability exists which allows a lower privileged user with default permissions to access critical device resources via the API.

Patch / fix

  • Teltonika Networks RUTOS 7.8
  • Teltonika Networks TSWOS 1.3
  • teltonika-networks rutos_devices 7.8
  • teltonika-networks tswos 1.3

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
22 mo ago

Exploit prediction

0.20% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 5.9 CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CNA 4.0 5.9 CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • Teltonika Networks RUTOS
  • Teltonika Networks TSWOS
  • teltonika-networks rutos_devices
  • teltonika-networks tswos

Classification

Weakness
  • CWE-732 Incorrect Permission Assignment for Critical Resource

References

Sources

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.