What is the CVSS score of CVE-2022-2122?

CVE-2022-2122 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: 0.1%.

Is there a public PoC exploit available for CVE-2022-2122?

Yes, a public proof-of-concept exploit is available for CVE-2022-2122. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2022-2122?

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-2022-2122

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Weakness	CWE CWE-122 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Heap buffer bounds checking MITRE ATT&CK 1 technique across 1 tactic: Execution The technique list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	While the CVSS 3.1 score of 7.8 indicates high severity, the real-world exploitation risk appears moderate based on multiple factors. The attack vector is local (AV:L) requiring user interaction (UI:R) to open a malicious media file, which limits remote exploitation potential. The EPSS score of 0.06% (19th percentile) suggests low active exploitation probability in the wild. A public proof-of-concept exists at the GitLab issue tracker, increasing the technical risk. The vulnerability is not listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating no confirmed active exploitation. The combination of local attack vector, user interaction requirement, and low EPSS score suggests this is a lower priority than the CVSS score alone might indicate, though the POC availability and potential for heap corruption warrant attention.
Exploit ScenarioDerived	An attacker crafts a malicious QuickTime or MP4 media file with specific metadata that triggers the integer overflow in qtdemux_inflate when processed by a vulnerable GStreamer instance. When a user opens this file in a media player or application using GStreamer, the overflow causes heap corruption that could lead to arbitrary code execution with the privileges of the media application. A proof-of-concept exploit demonstrating the vulnerability is publicly available at the GStreamer GitLab repository, making it easier for attackers to develop working exploits.

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

No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 17, 2026

A critical integer overflow vulnerability in GStreamer's qtdemux element allows attackers to trigger denial of service or potentially execute arbitrary code through heap memory corruption. The vulnerability affects GStreamer versions prior to the patched releases and requires user interaction to process a malicious media file. A public proof-of-concept exploit is available, though the EPSS score indicates relatively low real-world exploitation probability at 0.06%.

RemediationAI

Apply the security updates provided in Debian Security Advisory DSA-5204 (https://www.debian.org/security/2022/dsa-5204) for Debian 11, and the corresponding LTS announcement (https://lists.debian.org/debian-lts-announce/2022/08/msg00001.html) for Debian 10. For other distributions, update GStreamer packages to versions that include the fix for issue #1225 as tracked at https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1225. As a temporary mitigation, restrict processing of untrusted media files and implement input validation for QuickTime/MP4 files where possible. Consider sandboxing applications that process media files to limit the impact of potential exploitation.

Affects your stack

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Technical ContextAI · show details

The vulnerability resides in the qtdemux_inflate function within GStreamer's QuickTime demultiplexer (qtdemux) element, which handles zlib decompression of media data. The issue is classified as CWE-122 (Heap-based Buffer Overflow), where an integer overflow during decompression calculations can lead to incorrect memory allocation sizes. GStreamer is a widely-used multimedia framework that processes various media formats, and the qtdemux element specifically handles QuickTime/MP4 container formats. The behavior varies depending on the underlying libc implementation and operating system capabilities, ranging from a simple segmentation fault to a potentially exploitable heap overwrite condition.

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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 qtdemux using zlib decompression. Integer overflow in qtdemux element in qtdemux_inflate function which causes a segfault, or could cause a heap overwrite, depending on libc and OS. Depending on the libc used, and the underlying OS capabilities, it could be just a segfault or a heap overwrite.

Executive ViewAI

Why It Matters

CVE-2022-2122 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

0.1%

Top 81% 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 0.1%

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.