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CVE Record

CVE-2026-3085: GStreamer rtpqdm2depay Heap-based Buffer Overflow Remote Code Execution Vulnerability

GStreamer rtpqdm2depay Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the processing of X-QDM RTP payloads. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28851.

HighCVSS 8.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2026-3085 is a high-severity memory corruption flaw in GStreamer. A malicious RTP media payload can overflow heap memory during X-QDM processing and may run code inside the affected application. Exploitation requires interaction with software using the library, so risk depends on where GStreamer processes untrusted media or streams.

Executive priority

Treat as a near-term patching priority for media-processing environments. The business risk is highest where external users or network sources can cause GStreamer-based applications to parse media. Do not assume broad internet exposure without confirming how GStreamer is used internally.

Technical view

The flaw is in GStreamer's rtpqdm2depay handling of X-QDM RTP payloads. Insufficient validation of user-supplied length before copying into a heap buffer can cause heap-based buffer overflow. CVSS 8.8 reflects network reachability, low attack complexity, no privileges, and required user interaction.

Likely exposure

Exposure is most likely in systems, applications, or services that use GStreamer to process RTP media streams or files containing X-QDM payloads. The bundle lists GStreamer and a commit/version identifier, but does not fully enumerate all affected release versions or downstream package names.

Exploitation context

The source bundle supports potential remote code execution, but not confirmed active exploitation. KEV is false, and no cited source states exploitation in the wild. Attack vectors may vary by implementation because GStreamer is a library embedded in other software.

Researcher notes

Evidence identifies rtpqdm2depay and X-QDM RTP payload length validation as the vulnerable path. Public sources indicate RCE potential but do not provide complete affected-release mapping in the bundle. Validate exposure through package inventories and application media-ingest paths, not product name alone.

Mitigation direction

  • Apply vendor updates or Red Hat errata where GStreamer packages are present.
  • Review the upstream GStreamer commit linked for the corrective change.
  • Restrict processing of untrusted RTP media where patching is delayed.
  • Prioritize systems that automatically ingest media from external users or networks.
  • Monitor vendor advisories for exact affected version and package details.

Validation and detection

  • Inventory applications and services that embed or package GStreamer.
  • Check installed GStreamer package versions against vendor advisories.
  • Identify workflows that process RTP or X-QDM media from untrusted sources.
  • Confirm Red Hat systems have applicable RHSA updates installed.
  • Review security monitoring for crashes in media processing services.
Prepared
Confidence
medium
Sources
8

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-122: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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cwe · low confidence lookup

CWE-1284: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2026-3085 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
High
CVSS
8.8 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

2CVSS vectors
5Timeline events
2ADP providers
22Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: total

CVSS vector scores

2 official scores

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
8.8CVSS 3.0HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H2.85.9zdi
8.8CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H2.85.9redhat-SADP

Vulnerability scoring details

Base CVSS 3.1 score

8.8High
CVSS 3.1 vector shape for CVE-2026-3085Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. ADP timelineredhat-SADP

    Made public.

  3. CVE publishedCVE Program

    The CVE record was published.

  4. ADP timelineredhat-SADP

    Reported to Red Hat.

  5. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc
redhat-SADPgstreamer-plugins-good: GStreamer: Remote Code Execution via Heap-based Buffer Overflow in rtpqdm2depay
other:Red Hat severity ratingcvssV3_1
  • 2026-03-13T21:02:01.642Z: Reported to Red Hat.
  • 2026-03-13T20:40:02.186Z: Made public.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
GStreamerGStreamer1c6e163aa33962f5ee4a87d29319ccdd5cb67612unknown
Weakness

CWE details

CWE-122CWE-1284

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-122 · source CWE mapping

Heap-based Buffer Overflow

Heap-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

Open CWE intelligenceSame-CWE CVEs
CWE-1284 · source CWE mapping

Improper Validation of Specified Quantity in Input

Improper Validation of Specified Quantity in Input represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

Open CWE intelligenceSame-CWE CVEs