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NVD / CVE Program· CNA mitre

CVE-2020-23269: An issue was discovered in gpac 0.8.0.

MediumCVSS 5.5 · v3.1—No exploit Fix available

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: 0.62% (FIRST EPSS); higher than 50.5% of all records.
  • 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.
  • Fixed version: gpac (Debian:11) 1.0.1+dfsg1-2.

Low priority for now. Upgrade to gpac (Debian:11) 1.0.1+dfsg1-2 or later.

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

An issue was discovered in gpac 0.8.0. The stbl_GetSampleSize function in isomedia/stbl_read.c has a heap-based buffer overflow which can lead to a denial of service (DOS) via a crafted media file.

Published
Sep 21, 2021
Updated
Jun 16, 2026
EPSS
0.6% · 50th 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 · 0.6%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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  • 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 gpac0.8.0

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:11gpacbefore 1.0.1+dfsg1-21.0.1+dfsg1-2

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-2020-23266Sep 21, 2021 · An issue was discovered in gpac 0.8.0.
    22Monitor
  • ← EarlierCVE-2020-23267Sep 21, 2021 · An issue was discovered in gpac 0.8.0.
    28Monitor
  • Later →CVE-2020-22673Oct 12, 2021 · Memory leak in the senc_Parse function in MP4Box in gpac 0.8.0 allows attackers to cause a denial of service (DoS) via a crafted input.
    22Monitor

Remediation

Which version to upgrade to

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

Product / packageFixed versionSource
debian:gpac1.0.1+dfsg1-2 · Debian:11Package registry (OSV)

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.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · 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-787 · Out-of-bounds Write

CVSS vector

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

nvd-primary

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.

All records