CVE-2026-51263Active Exploitation

LOW

Exploitation ongoing with high activity in latest observed window (1 mentions)

Immediate actions

Prioritize remediation for affected systems immediately
Assume compromise if assets are exposed
Track advisory updates for patch or workaround availability

Recommended action window: Immediate (within 24h)

NVD description

Rejected reason: DO NOT USE THIS CVE RECORD. ConsultIDs: none. Reason: This record was withdrawn by its CNA. Further investigation showed that it was not a security issue. Notes: none.

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3.5/ 10 priority

Priority

LOW

Exploitation

ACTIVE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

Active exploitation appears in 1 classified signals
1 mentions across 1 observed day

What's happening

Active exploitation reported across 1 signal
Technical details provided in 1 signal
1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Active Exploitation

1100.0%

Referenced assets1 URL

By indicator

https://sec.kaitan.id/cves/CVE-2026-51263

Full discourse1 post

Kaitan ID Security@KaitanSecurity91d
Active Exploitation
⚠️ HIGH — CVE-2026-51263 schreibfaul1 ESP32-audioI2S 3.4.5 is vulnerable to Buffer Overflow. The Audio::openai_speech function in the Audio libr… ⚡ Exploit in the wild Full analysis → https://sec.kaitan.id/cves/CVE-2026-51263 #OpenAI #CyberSecurity #InfoSec
Post summary
CVE-2026-51263 is a high‑severity buffer overflow in ESP32‑audioI2S 3.4.5, and reports indicate it is being exploited in the wild. No PoC, exploit code, or patch information is provided.
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