CVE-2025-55297

ESF-IDF BluFi Example Memory Overflow Vulnerability

HIGH
8.8
CVSS Score
Published: August 21, 2025 at 03:05 PM UTC
Updated: June 17, 2026 at 09:41 AM UTC
1 product affected across 1 vendorEsp Idf

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Severity
HIGH8.8
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. The BluFi example bundled in ESP-IDF was vulnerable to memory overflows in two areas: Wi-Fi credential handling and Diffie–Hellman key exchange. This vulnerability is fixed in 5.4.1, 5.3.3, 5.1.6, and 5.0.9.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 5.0.9v < 5.1.6v < 5.3.3v < 5.4.15.1 ≤ v < 5.1.65.2 ≤ v < 5.3.35.4 ≤ v < 5.4.1
Affected range stops below 5.0.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.1.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.3.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.4.1, so it looks safe — our inference, not a vendor statement

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-120CWE-131

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