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CVE-2023-49990

16
FAUCET Score

CVE-2023-49990 describes a buffer overflow vulnerability in Espeak-ng version 1.52-dev, specifically within the SetUpPhonemeTable function in synthdata.c. This medium-severity vulnerability (CVSS 5.3) requires local access and user interaction, potentially leading to limited impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion 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

5.3MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
1.8
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
32.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 39th percentile among its peer group of 5,758 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: Azure Linux 3.0 x64Fixed in: 1.51.1-1
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 ARMFixed in: 1.51.1-1
microsoftpatch availablevia msrc
Product: azl3 espeak-ng 1.51.1-1 on Azure Linux 3.0Fixed in: 1.51.1-1
microsoftpatch availablevia msrc
Product: 18421-17084Fixed in: 1.51.1-1
github_advisoryvendor investigatingvia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: espeak-ng
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: espeak-ng

Vendor Advisories (3)

microsoft2024-Jun/CVE-2023-49990

CVE-2023-49990

Jun 11, 2024
microsoft2023-Dec/CVE-2023-49990Moderate

Espeak-ng 1.52-dev was discovered to contain a buffer-overflow via the function SetUpPhonemeTable at synthdata.c.

Dec 12, 2023
redhatCVE-2023-49990Moderate

espeak-ng: buffer overflow in SetUpPhonemeTable function at synthdata.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/1824
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