VDB-247567 · CVE-2023-49994 · Issue 1823

espeak-ng 1.52-dev wavegen.c PeaksToHarmspect memory corruption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.5	$0-$5k	0.00

Summaryinfo

A vulnerability was found in espeak-ng 1.52-dev. It has been classified as critical. Affected by this issue is the function PeaksToHarmspect of the file wavegen.c. This manipulation causes memory corruption. This vulnerability is tracked as CVE-2023-49994. No exploit exists.

Detailsinfo

A vulnerability has been found in espeak-ng 1.52-dev and classified as critical. Affected by this vulnerability is the function PeaksToHarmspect of the file wavegen.c. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Espeak-ng 1.52-dev was discovered to contain a Floating Point Exception via the function PeaksToHarmspect at wavegen.c.

The weakness was disclosed 12/12/2023 as 1823. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2023-49994 since 12/04/2023. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 237620 (Debian dla-4198 : espeak-ng - security update), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (237620). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

espeak-ng

Version

1.52-dev

Website

Product: https://github.com/espeak-ng/espeak-ng/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 237620
Nessus Name: Debian dla-4198 : espeak-ng - security update

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/04/2023 🔍
12/12/2023 +8 days 🔍
12/12/2023 +0 days 🔍
05/31/2025 +536 days 🔍

Sourcesinfo

Product: github.com

Advisory: 1823
Status: Confirmed

CVE: CVE-2023-49994 (🔍)
GCVE (CVE): GCVE-0-2023-49994
GCVE (VulDB): GCVE-100-247567

Entryinfo

Created: 12/12/2023 17:01
Updated: 05/31/2025 17:45
Changes: 12/12/2023 17:01 (39), 01/02/2024 14:11 (9), 05/31/2025 17:45 (17)
Complete: 🔍
Cache ID: 216::103