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9.3
CVE-2026-101039: FAST FAC1900R devdiscover Service can be remotely exploited
CVE-2026-101039 · published 13 days ago
Summary
The devdiscover Service in FAST FAC1900R version 20190827_2.0.2 contains a flaw that lets an attacker send specially crafted data and overflow a memory area, potentially crashing the device or taking control. The issue can be triggered from outside the network and a public exploit already exists. Apply any available firmware update from FAST and limit network exposure of the device until it is patched.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| fast | fac1900r | 20190827_2.0.2 |
Original advisory text
FAST FAC1900R devdiscover Service copy_msg_element stack-based overflow
A vulnerability was identified in FAST FAC1900R 20190827_2.0.2. Affected by this issue is the function copy_msg_element of the component devdiscover Service. Such manipulation leads to stack-based buffer overflow. The attack can be executed remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
Internet-facing
3 days
Internal
60 days
- Not known to be exploited
- Can be exploited automatically
- Gives an attacker full control
Type
CWE-119Buffer Overflow
CWE-121Stack-based Buffer Overflow
Timeline
Published28 Sep 2026
Updated11 Oct 2026
First seen28 Sep 2026
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