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NVD / CVE Program· CNA mitre

CVE-2025-55660: A stack overflow in the gf_opus_read_length function (media_tools/av_parsers.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of…

MediumCVSS 5.5 · v3.1—No exploit No fix recorded

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.25% (FIRST EPSS).
  • Someone with local access to the system can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A stack overflow in the gf_opus_read_length function (media_tools/av_parsers.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS) via supplying a crafted MP4 file.

Published
Jun 15, 2026
Updated
Oct 13, 2026
EPSS
0.2% · 17th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2025-55660

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
gpacgpac

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • gpac gpacbefore 26.02.0

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:11gpacfrom 0—

Same product

gpac: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-28300NULL Pointer Dereference in the "isomedia/track.c" module's "MergeTrack()" function of GPAC v0.5.2 allows attackers to execute arbitrary…
    40Plan
  • CVE-2018-13006An issue was discovered in MP4Box in GPAC 0.7.1.
    40Plan
  • CVE-2018-13005An issue was discovered in MP4Box in GPAC 0.7.1.
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2025-55650Jun 15, 2026 · A heap use-after-free in the gf_node_get_tag function (scenegraph/base_scenegraph.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial…
    22Monitor
  • ← EarlierCVE-2025-55652Jun 15, 2026 · A heap buffer overflow in the gf_isom_vp_config_new function (isomedia/avc_ext.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of…
    22Monitor
  • Later →CVE-2025-55661Jun 15, 2026 · A heap buffer overflow in the Opus audio stream parser component of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS)…
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2025-522926 days apartA stack buffer overflow in the filein_process function (in_file.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS)…
    30Monitor
  • CVE-2025-604749 days apartA buffer overflow in the gf_media_import function (/media_tools/av_parsers.c) of GPAC Project/MP4Box before 26.02.0 allows attackers to…
    30Monitor
  • CVE-2026-27821110 days apartGPAC NHML Demuxer (dmx_nhml.c) Vulnerable to Stack Buffer Overflow
    30Monitor
  • CVE-2025-70304151 days apartA buffer overflow in the vobsub_get_subpic_duration() function of GPAC v2.4.0 allows attackers to cause a Denial of Service (DoS) via a…
    30Monitor
  • CVE-2025-70307151 days apartA stack overflow in the dump_ttxt_sample function of GPAC v2.4.0 allows attackers to cause a Denial of Service (DoS) via a crafted packet.
    30Monitor
  • CVE-2025-70309151 days apartA stack overflow in the pcmreframe_flush_packet function of GPAC v2.4.0 allows attackers to cause a Denial of Service (DoS) via a crafted…
    22Monitor

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · public bounty program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-121 · Stack-based Buffer Overflow

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

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