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NVD / CVE Program· CNA redhat

CVE-2026-12892: Gstreamer1-plugins-bad-free: gstreamer1-plugins-bad: 1-byte heap out-of-bounds read in h.264 nal extension slice parser

Noroxi assessment

Priority: Monitor (action score 17/100)

  • 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: 0.15% (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.
  • Fixed version: gst-plugins-bad1.0 (Debian:12) 1.22.0-4+deb12u8; gst-plugins-bad1.0 (Debian:13) 1.26.2-3+deb13u3; gst-plugins-bad1.0 (Debian:14) 1.28.5-1.

Low priority for now. Upgrade to gst-plugins-bad1.0 (Debian:12) 1.22.0-4+deb12u8; gst-plugins-bad1.0 (Debian:13) 1.26.2-3+deb13u3; gst-plugins-bad1.0 (Debian:14) 1.28.5-1 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

A flaw was found in GStreamer's gst-plugins-bad package. When processing a specially crafted H.264 video file containing malformed MVC or SVC extension slice NAL units, a 1-byte heap out-of-bounds read can occur during parsing. This happens when the parser attempts to check slice boundary information without first verifying that the NAL unit contains enough data beyond the extension header. An attacker could exploit this by tricking a user into opening a malicious H.264 video file, potentially causing the application to crash or leak a single byte of heap memory.

MediumCVSS 4.4 · v3.1—No exploit Fix available
Published
Jun 23, 2026
Updated
Sep 10, 2026
EPSS
0.1% · 4th percentile

Report tools

JSON

Action score

17

Monitor

Low priority for now.

CVSS
17 / 40 · 4.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · redhat
4.4
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

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

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

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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
gstreamergstreamer
redhatenterprise linux

Affected versions

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

  • gstreamer gstreamerall versions
  • redhat enterprise linux10.0
  • redhat enterprise linux6.0
  • redhat enterprise linux7.0
  • redhat enterprise linux8.0
  • redhat enterprise linux9.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • Red Hat Red Hat Enterprise Linux 10

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 6

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 7

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 8

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 9

    • all versionsaffected

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12gst-plugins-bad1.0before 1.22.0-4+deb12u81.22.0-4+deb12u8
Debian:13gst-plugins-bad1.0before 1.26.2-3+deb13u31.26.2-3+deb13u3
Debian:14gst-plugins-bad1.0before 1.28.5-11.28.5-1
openSUSE:Leap 16.0gstreamer-plugins-badbefore 1.26.7-160000.3.11.26.7-160000.3.1
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSgstreamer-plugins-badbefore 1.20.1-150400.3.29.11.20.1-150400.3.29.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSgstreamer-plugins-badbefore 1.22.0-150500.3.34.11.22.0-150500.3.34.1
SUSE:Linux Enterprise Module for Basesystem 15 SP7gstreamer-plugins-badbefore 1.24.0-150600.4.9.11.24.0-150600.4.9.1
SUSE:Linux Enterprise Server 12 SP5-LTSSgstreamer-plugins-badbefore 1.8.3-18.21.11.8.3-18.21.1
SUSE:Linux Micro 6.2gstreamer-plugins-badbefore 1.26.7-160000.3.11.26.7-160000.3.1

Same product

gstreamer: all records

Other highest-scoring records for the same primary product.

  • CVE-2016-9636Heap-based buffer overflow in the flx_decode_delta_fli function in gst/flx/gstflxdec.c in the FLIC decoder in GStreamer before 1.10.2 allows
    42Plan
  • CVE-2016-9635Heap-based buffer overflow in the flx_decode_delta_fli function in gst/flx/gstflxdec.c in the FLIC decoder in GStreamer before 1.10.2 allows
    42Plan
  • CVE-2016-9634Heap-based buffer overflow in the flx_decode_delta_fli function in gst/flx/gstflxdec.c in the FLIC decoder in GStreamer before 1.10.2 allows
    42Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-3086Mar 16, 2026 · GStreamer H.266 Codec Parser Out-Of-Bounds Write Remote Code Execution Vulnerability
    31Monitor
  • ← EarlierCVE-2026-12891Jun 23, 2026 · Gstreamer1-plugins-bad-free: gstreamer1-plugins-bad: global buffer overflow (oob read) in h.266/vvc vui parameter parser
    17Monitor
  • Later →CVE-2026-5056Jul 29, 2026 · GStreamer qtdemux Stack-based Buffer Overflow Remote Code Execution Vulnerability
    31Monitor

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:gst-plugins-bad1.01.22.0-4+deb12u8 · Debian:12Package registry (OSV)
debian:gst-plugins-bad1.01.26.2-3+deb13u3 · Debian:13Package registry (OSV)
opensuse:gstreamer-plugins-bad1.26.7-160000.3.1 · openSUSE:Leap 16.0Package registry (OSV)
suse:gstreamer-plugins-bad1.26.7-160000.3.1 · SUSE:Linux Micro 6.2Package 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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

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

  • CVE-2025-47219320 days apartIn GStreamer through 1.26.1, the isomp4 plugin's qtdemux_parse_trak function may read past the end of a heap buffer while parsing an MP4 fil
    32Monitor
  • CVE-2025-47183320 days apartIn GStreamer through 1.26.1, the isomp4 plugin's qtdemux_parse_tree function may read past the end of a heap buffer while parsing an MP4 fil
    26Monitor
  • CVE-2026-7343450 days apartGstreamer1-plugins-good: gstreamer: out-of-bounds read in avidemux vprp video field descriptor parsing
    24Monitor
  • CVE-2026-128910 days apartGstreamer1-plugins-bad-free: gstreamer1-plugins-bad: global buffer overflow (oob read) in h.266/vvc vui parameter parser
    17Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

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

Weakness class (CWE)

CWE-125 · Out-of-bounds Read

CVSS vector

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

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.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records