CVE-2021-33362

mediumpriority · track · 31EPSS 0.013 · 70 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.27% (70th) EPSS

CVSS 6.8 · medium

Is it mine?

7 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

Stack buffer overflow in the hevc_parse_vps_extension function in MP4Box in GPAC 1.0.1 allows attackers to cause a denial of service or execute arbitrary code via a crafted file.

cvss

Technical severity, 0–10. One row per scoring source.

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–8.8

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.18.8highAV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-787US

affected products (7)

Products and version ranges known to be affected.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2021-09-13modified 2026-06-17

related (16,137)

Related entries.

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+16132 more

references (7)

External citations — patches, advisories, analysis.

https://github.com/gpac/gpac/commit/1273cdc706eeedf8346d4b9faa5b33435056061d cnnvd
https://github.com/gpac/gpac/issues/1780 cnnvd
https://nvd.nist.gov/vuln/detail/CVE-2021-33362 cnnvd
https://github.com/gpac/gpac/commit/1273cdc706eeedf8346d4b9faa5b33435056061d enisa_euvd
https://github.com/gpac/gpac/issues/1780 enisa_euvd
https://github.com/gpac/gpac/commit/1273cdc706eeedf8346d4b9faa5b33435056061dPatchThird Party Advisorynvd
https://github.com/gpac/gpac/issues/1780ExploitIssue TrackingPatchThird Party Advisorynvd

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