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CVE mentions, exploit signals, and PoC evidence in one fast public view.

CVE detail

CVE-2026-27821

GPAC is an open-source multimedia framework. In versions up to and including 26.02.0, a stack buffer overflow occurs during NHML file parsing in `src/filters/dmx_nhml.c`. The value of the xmlHeaderEnd XML attribute is copied from att->value into szXmlHeaderEnd[1000] using strcpy() without any length validation. If the input exceeds 1000 bytes, it overwrites beyond the stack buffer boundary. Commit 9bd7137fded2db40de61a2cf3045812c8741ec52 patches the issue.

CVSS 7.7 · HighBuzz score 16.0

Buzz score

Why this CVE is surfacing

Buzz score total 16.0

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 11.0 · diversity 5.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Mention score
11.0
2 evidence mentions in the snapshot
Diversity score
5.0
1 sources across 1 categories
KEV score
0.0
No KEV entry observed
OTX score
0.0
0 OTX pulses
PoC score
0.0
0 repos · best confidence N/A
Best PoC traction
0
Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions
0
within the 30d window
Peak daily
0
highest bucket

Evidence

Source links by recency

Newest mentions first
2 source links · newest first

Exploit code

Public exploit repository references

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0 repository references · best confidence N/A · max 0 stars
No public PoC repositories have been matched yet.

Related records

Similar CVEs

6 related CVEs with shared weakness or product evidence
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    A buffer overflow in the gf_media_import function (/media_tools/av_parsers.c) of GPAC Project/MP4Box before 26.02.0 allows attackers to cause a Denial of Service (DoS) via supplyi…

    CVSS 7.5 · High
  • 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 Service (DoS) via supplying a crafted MP4…

    CVSS 5.5 · Medium
  • CVE-2025-52292

    A 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) via supplying a crafted MP4 file.

    CVSS 7.5 · High
    2 mentions
  • CVE-2025-70307

    A 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.

    CVSS 7.5 · High
  • CVE-2025-70309

    A 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 WAV file.

    CVSS 5.5 · Medium
  • CVE-2025-70305

    A stack overflow in the dmx_saf function of GPAC v2.4.0 allows attackers to cause a Denial of Service (DoS) via a crafted .saf file.

    CVSS 5.5 · Medium