CVE-2026-8170General

LOWCVSS 8.7 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

The mv, cp, and rm file utilities exposed within the ExtremeXOS (EXOS) shell environment fail to safely canonicalize paths and follow symbolic links outside of the intended privilege boundary. An attacker with low-privilege CLI access can create a symbolic link that references a privileged filesystem location and then invoke the affected utilities to read, modify, or replace security-critical files outside of their authorized scope. Under certain conditions, this may enable escalation to root-level access and persistent modification of the device software stack. Exploitation is possible remotely by an attacker holding a low-privilege account, or locally via the serial console. Extreme would like to thank Hadrien Barral (Université Gustave Eiffel) and Georges-Axel Jaloyan (French Ministry of the Interior) for responsible disclosure of their findings.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-59

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Threat summary

  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • General: 1 classified signal
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-07-20); latest day: 1
  • 2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-07-20: 1Mentions · 2026-07-21: 107-2007-21
Signal classification2 categories
General
150.0%
Disclosure
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-07-201
General1
2026-07-211
Disclosure1
Full discourse2 posts
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-8170 Privilege Escalation via Symbolic Link Following in ExtremeXOS File Utilities https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-8170

    Post summary

    The post announces CVE‑2026‑8170, describing it as a privilege escalation vulnerability in ExtremeXOS file utilities, without providing further technical details, exploit code, patches, or evidence of active exploitation.

    0000083
    4.1K followersView on X
  • MalwareObserver@MalwareObserver
    General

    ⚔️ ATTACKS CVE Notify: 🚨 [CVE-2026-8170](https://www.extremenetworks.com/support/policies/product-security) The mv, cp, an... https://www.extremenetworks.com/support/policies/product-security #InfoSec #CyberAttack #ThreatIntel

    Post summary

    The post announces the existence of CVE‑2026‑8170 and provides a link to a vendor policy page, but offers no further details or actionable information.

    0000049
    13 followersView on X

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