What is the CVSS score of CVE-2022-1925?

CVE-2022-1925 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Is there a public PoC exploit available for CVE-2022-1925?

Yes, a public proof-of-concept exploit is available for CVE-2022-1925. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2022-1925?

Within 7 days: Identify all affected systems and apply vendor patches promptly. If patching is delayed, consider network segmentation to limit exposure.

Debian Linux CVE-2022-1925

HIGH

Heap-based Buffer Overflow (CWE-122)

2022-07-19 secalert@redhat.com

Buffer Overflow Debian Debian Linux Gstreamer

7.8

CVSS 3.1 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-122 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Heap buffer bounds checking MITRE ATT&CK 1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	Despite the high CVSS score of 7.8, the real-world risk appears moderate based on multiple factors. The CVSS vector (AV:L/AC:L/PR:N/UI:R) indicates local access with user interaction required, limiting remote exploitation potential. The EPSS score of 0.04% (13th percentile) suggests very low likelihood of active exploitation in the wild. While a public proof-of-concept exists on GitLab, the vulnerability is not listed in CISA KEV, indicating no confirmed exploitation. The technical impact remains severe if successfully exploited (full CIA compromise), but the required conditions and low automation potential reduce practical risk.
Exploit ScenarioDerived	An attacker would need to craft a malicious MKV file with specific HEADERSTRIP compression headers that trigger the integer overflow, then convince a user to process this file through an application using GStreamer's matroskaparse element. Since user interaction is required and the attack is limited to local access, this would likely involve social engineering or compromising a media processing service. The publicly available proof-of-concept on GitLab demonstrates the technical feasibility of triggering the heap overflow.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 17, 2026

A heap overflow vulnerability exists in GStreamer's matroskaparse element due to an integer overflow in the gst_matroska_decompress_data function when processing MKV files with HEADERSTRIP decompression. While the matroskaparse element lacks proper size checks making it vulnerable, the more commonly used matroskademux element has restrictions that prevent exploitation. A proof-of-concept exploit is publicly available, though the EPSS score indicates a relatively low (4%) probability of real-world exploitation.

RemediationAI

Apply the security updates provided by your distribution immediately - Debian users should install DSA-5204 updates, while other distributions should check for GStreamer updates that address CVE-2022-1925. For systems that cannot be immediately patched, consider restricting access to untrusted MKV files and disabling matroskaparse element usage where possible. Monitor the upstream GitLab issue at https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1225 for additional patches and verify updates are applied through your package manager.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

GStreamer is a multimedia framework used for creating streaming media applications, with the affected versions identified through CPE as all versions prior to the fix (cpe:2.3:a:gstreamer:gstreamer:*:*:*:*:*:*:*:*). The vulnerability stems from a classic heap-based buffer overflow (CWE-122) where integer overflow during decompression calculations leads to undersized buffer allocation. The matroskaparse element processes Matroska/MKV container files and specifically fails to validate chunk sizes during HEADERSTRIP decompression, while the matroskademux element (used for actual playback) includes protective size restrictions.

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Severity by source

NVD PRIMARY 7.8 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

PoC Detected

Mar 17, 2026 - 15:52 vuln.today

Public exploit code

CVE Published

Jul 19, 2022 - 20:15 nvd

HIGH 7.8

DescriptionCVE.org

DOS / potential heap overwrite in mkv demuxing using HEADERSTRIP decompression. Integer overflow in matroskaparse element in gst_matroska_decompress_data function which causes a heap overflow. Due to restrictions on chunk sizes in the matroskademux element, the overflow can't be triggered, however the matroskaparse element has no size checks.

Executive ViewAI

Why It Matters

CVE-2022-1925 presents notable security risk, a heap-based buffer overflow vulnerability rated CVSS 7.8. Exploitation could allow attackers to corrupt memory, crash the application, or potentially execute arbitrary code. Proof-of-concept code is publicly available, increasing the risk of exploitation. Organizations should apply vendor updates when available and consider compensating controls in the interim.

Business Impact: High

Compensating Controls

Apply vendor patch. If immediate patching is not feasible: (1) Enable ASLR and DEP where available; (2) Implement network segmentation; (3) Monitor for exploitation indicators.

Threat Intelligence Overview

EPSS Score

0.0%

Top 87% exploitable

Exploit

POC

Public exploit code exists

Data Quality

4 sources

Confidence: Medium

NVD

CVE.org

EPSS

VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC Yes

EPSS 0.0%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

Poc

System Exposure· derived

Small

Automatable· derived

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +39

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.