CVE-2026-39199Disclosure

LOW

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

Hunt for exploitation attempts and persistence artifacts
Increase monitoring for publicly documented tradecraft
Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

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1.5/ 10 priority

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

NONE

Threat summary

Public PoC is present in monitored signal
1 mentions across 1 observed day

What's happening

PoC mentioned or linked in 1 signal
Technical details provided in 1 signal
Disclosure: 1 classified signal
1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Disclosure

1100.0%

Referenced assets1 URL

By indicator

https://karansaini.com/snes9x-oob-write/

Full discourse1 post

Karan Saini@Squeal92d
Disclosure
New blog post: A silly memory safety bug in Snes9x 1.63, which causes the emulator to crash when loading a ROM alongside a crafted .ups patch file. (CVE-2026-39199) https://karansaini.com/snes9x-oob-write/
Post summary
A new memory‑safety bug (CVE‑2026‑39199) in Snes9x 1.63 causes crashes when loading a ROM with a crafted .ups patch; a blog post link provides details, but no patch or active exploitation is reported.
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