Cyber Resilience

CVE-2025-55641

Memory Safety in Gpac ≤ 26.02.0

Public PoCMemory Safety
Published
15 June 2026
Modified
17 June 2026
Patch / advisory
View advisory
CVSS Score v3.1 5.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS Score 0.0024 16th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2025-55641 is a medium-severity NULL Pointer Dereference (CWE-476) vulnerability in Gpac Gpac. Its CVSS base score is 5.5 (Medium).

Operationally, ranked at the 16th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to SI-10 (Information Input Validation) and SI-11 (Error Handling) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A10:2025 Mishandling of Exceptional Conditions

EU & UK References

Vulnerability Data

A NULL pointer dereference in the gf_isom_copy_sample_info function (isomedia/isom_write.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS) via supplying a crafted MP4 file.

CWE(s)
CWE-476

Related Threats

CVEs Like This One

CVE-2023-46427Same product: Gpac Gpac
CVE-2025-55651Same product: Gpac Gpac
CVE-2023-5586Same product: Gpac Gpac
CVE-2024-6063Same product: Gpac Gpac
CVE-2025-60473Same product: Gpac Gpac
CVE-2023-2840Same product: Gpac Gpac
CVE-2024-50665Same product: Gpac Gpac
CVE-2025-55659Same product: Gpac Gpac
CVE-2023-3012Same product: Gpac Gpac
CVE-2023-4681Same product: Gpac Gpac

Affected Assets

gpac
gpac
≤ 26.02.0

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • SI-10 Information Input Validation
  • SI-11 Error Handling
  • SI-16 Memory Protection
Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)

—

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match
prevent

Directly enforces validation of MP4 input structures before gf_isom_copy_sample_info processes them, blocking the crafted file that triggers the NULL dereference.

SI-11 Error Handling good match
prevent

Requires graceful error handling for invalid pointer conditions inside isom_write.c, preventing the unhandled NULL dereference from becoming a DoS.

SI-16 Memory Protection partial match
prevent

Applies memory-access protections that can contain or safely terminate the process when a NULL pointer is dereferenced during sample-info copying.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices (static analysis, code review, safe coding standards) directly prevent NULL dereference bugs during development.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
detects

Security testing can detect NULL dereference defects before release.

A.8.25 Secure development life cycle partial match
prevents

Secure SDLC mandates defensive coding practices that can prevent NULL dereferences.

A.8.26 Application security requirements partial match
prevents

Application security requirements can specify input validation and pointer-safety rules.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles encourage defensive design that avoids unsafe pointer use.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly require NULL-pointer checks and safe dereference patterns.

References