CVE-2025-65092Network attack vector

Firmware crash via unchecked JPEG marker lengths

Published Nov 21, 2025 · Updated Nov 21, 2025

Out-of-bounds read in ESP-IDF 5.3.4, 5.4.3, and 5.5.1 allows remote attackers to crash ESP32-P4 firmware via a crafted JPEG. In components/esp_driver_jpeg/jpeg_parse_marker.c, marker parsers consume attacker-controlled lengths without validating the remaining buffer or 64-entry quantization-table bounds. No authentication or user interaction is required, but the path exists only when ESP32-P4 firmware invokes the hardware JPEG decoder; documented consequences are a crash or other undefined behavior.

CVSS severity6.9
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in ESP-IDF 5.3.4, 5.4.3, and 5.5.1 allows remote attackers to crash ESP32-P4 firmware via a crafted JPEG. In components/esp_driver_jpeg/jpeg_parse_marker.c, marker parsers consume attacker-controlled lengths without validating the remaining buffer or 64-entry quantization-table bounds. No authentication or user interaction is required, but the path exists only when ESP32-P4 firmware invokes the hardware JPEG decoder; documented consequences are a crash or other undefined behavior.

The record

CVE
CVE-2025-65092
Published
Nov 21, 2025
Updated
Nov 21, 2025
Vendor
Espressif Systems
Product
ESP-IDF
Classifications
CWE-125, CWE-191, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion== 5.3.4
  2. Affected versionversion== 5.4.3
  3. Affected versionversion== 5.5.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Espressif Systems · ESP-IDFversion== 5.3.4; version== 5.4.3; version== 5.5.1

Published CVSS scores

6.9GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
CWE-191Integer Underflow (Wrap or Wraparound)
T1499.004Application or System Exploitation Flaws

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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