Skip to main content

Wire CVE-2023-48221

HIGH
Use of Externally-Controlled Format String (CWE-134)
2023-11-20 security-advisories@github.com
8.8
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Format string safety
Impact

CVSS score of 8.8 (HIGH). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.9% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAI

wire-avs provides Audio, Visual, and Signaling (AVS) functionality sure the secure messaging software Wire. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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

This vulnerability is classified under CWE-134. wire-avs provides Audio, Visual, and Signaling (AVS) functionality sure the secure messaging software Wire. Prior to versions 9.2.22 and 9.3.5, a remote format string vulnerability could potentially allow an attacker to cause a denial of service or possibly execute arbitrary code. The issue has been fixed in wire-avs 9.2.22 & 9.3.5 and is already included on all Wire products. No known workarounds are available. Affected products include: Wire Audio\, Video\, And Signaling.

Know when Wire gets its next vulnerability

  • Watch products and get an email when something new is published
  • Check this CVE against your own stack and servers
  • Exploit and PoC references, threat intelligence from 22 sources

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 8.8 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionNVD

wire-avs provides Audio, Visual, and Signaling (AVS) functionality sure the secure messaging software Wire. Prior to versions 9.2.22 and 9.3.5, a remote format string vulnerability could potentially allow an attacker to cause a denial of service or possibly execute arbitrary code. The issue has been fixed in wire-avs 9.2.22 & 9.3.5 and is already included on all Wire products. No known workarounds are available.

Threat Intelligence Overview

EPSS Score
0.9%
Top 45% exploitable
Data Quality
3 sources
Confidence: Low

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 No
EPSS 0.9%
Patch available Yes
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
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

45
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)NVD

cpe:2.3:a:wire:audio\,_video\,_and_signaling:*:*:*:*:*:*:*:*
cpe:2.3:a:wire:audio\,_video\,_and_signaling:*:*:*:*:*:*:*:*

More in Wire

View all
CVE-2020-27853 CRITICAL POC
9.8 Oct 27

Wire before 2020-10-16 allows remote attackers to cause a denial of service (application crash) or possibly execute arbi

CVE-2021-21382 CRITICAL POC
9.6 Jun 11

Restund is an open source NAT traversal server. Rated critical severity (CVSS 9.6), this vulnerability is remotely explo

CVE-2021-29508 CRITICAL POC
9.1 May 11

Due to how Wire handles type information in its serialization format, malicious payloads can be passed to a deserializer

CVE-2020-15258 HIGH POC
8.0 Oct 16

In Wire before 3.20.x, `shell.openExternal` was used without checking the URL. Rated high severity (CVSS 8.0), this vuln

CVE-2026-63126 HIGH POC
7.5 Sep 16

Denial of service in Square Wire (the gRPC/protobuf runtime for Kotlin, Java, Swift, and Android) affects all releases b

CVE-2018-8909 HIGH POC
7.5 Mar 22

The Wire application before 2018-03-07 for Android allows attackers to write to pathnames outside of the downloads direc

CVE-2021-32683 MEDIUM POC
6.1 Jun 15

wire-webapp is the web version of Wire, an open-source messenger. Rated medium severity (CVSS 6.1), this vulnerability i

CVE-2021-41100 CRITICAL
9.8 Oct 04

Wire-server is the backing server for the open source wire secure messaging application. Rated critical severity (CVSS 9

CVE-2021-41093 CRITICAL
9.8 Oct 04

Wire is an open source secure messenger. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable,

CVE-2022-43673 MEDIUM POC
4.7 Nov 18

Wire through 3.22.3993 on Windows advertises deletion of sent messages; nonetheless, all messages can be retrieved (for

CVE-2022-31122 HIGH
8.1 Oct 18

Wire is an encrypted communication and collaboration platform. Rated high severity (CVSS 8.1), this vulnerability is rem

CVE-2022-23610 HIGH
8.1 Mar 16

wire-server provides back end services for Wire, an open source messenger. Rated high severity (CVSS 8.1), this vulnerab

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy