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CVE-2023-49994

17
FAUCET Score

CVE-2023-49994 describes a Floating Point Exception vulnerability in Espeak-ng version 1.52-dev, specifically within the PeaksToHarmspect function in wavegen.c. This vulnerability carries a CVSS score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring user interaction, and potentially leading to high availability impact without affecting confidentiality or integrity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.52CPE matchmatch criteria
cpe:2.3:a:espeak-ng:espeak-ng:1.52:dev:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 37th percentile among its peer group of 5,760 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

microsoftpatch availablevia msrc
Product: 18421-17084Fixed in: 1.52.0-1
microsoftpatch availablevia msrc
Product: 18420-17084Fixed in: 1.52.0-1
microsoftpatch availablevia msrc
Product: azl3 espeak-ng 1.52.0-1 on Azure Linux 3.0Fixed in: 1.52.0-1
microsoftpatch availablevia msrc
Product: azl3 espeak-ng 1.51.1-1 on Azure Linux 3.0Fixed in: 1.52.0-1
github_advisoryvendor investigatingvia nvd_reference
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: espeak-ng
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: espeak-ng

Vendor Advisories (2)

microsoft2023-Dec/CVE-2023-49994Moderate

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

Dec 12, 2023
redhatCVE-2023-49994Low

espeak-ng: floating point exception in PeaksToHarmspect at wavegen.c

Dec 12, 2023

References

lists.debian.org / debian-lts-announce/2025/05/msg00050.html
lists.fedoraproject.org / archives/list/[email protected]/message/2PZEBWPNKPAYJMIM3AS2RP3FL6FX3HS4
lists.fedoraproject.org / archives/list/[email protected]/message/Z5WW6RKHRWLEMCKCQ6UZCXWC5J7UWMUQ
github.com / espeak-ng/espeak-ng/issues/1823
ExploitIssue TrackingVendor Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/2PZEBWPNKPAYJMIM3AS2RP3FL6FX3HS4
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/Z5WW6RKHRWLEMCKCQ6UZCXWC5J7UWMUQ