CVE-2022-47656

HIGH

7.8

CVSS Score

Published: January 5, 2023 at 12:00 AM UTC

Updated: June 17, 2026 at 05:14 AM UTC

1 product affected across 1 vendorGpac

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Severity

HIGH7.8

Exploit prediction

EPSS 0.3%

SSVC

PoC

Description

GPAC MP4box 2.1-DEV-rev617-g85ce76efd is vulnerable to Buffer Overflow in gf_hevc_read_sps_bs_internal function of media_tools/av_parsers.c:8273

Affected

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

Gpac · Gpac

95%

v < 2.2.0

Affected range stops below 2.2.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://github.com/gpac/gpac/issues/2353

References (1)

ExploitIssue TrackingPatchThird Party Advisory

Source: [email protected]

https://github.com/gpac/gpac/issues/2353

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

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

CVSS

7.8HIGHCISA-ADP

Attack Vector: LOCAL
Complexity: LOW
Privileges: NONE
User Interaction: REQUIRED
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-120

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