Vulnerability · Published Dec 12, 2023 · Assigned by mitre
CVE-2023-49991
Medium 5.3
In plain English
A medium-severity security flaw in the espeak-ng package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.3Medium
Exploit odds (30 days)0.4%top 68.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Espeak-ng 1.52-dev was discovered to contain a Stack Buffer Underflow via the function CountVowelPosition at synthdata.c.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | espeak-ng | 1.51+dfsg-10+deb12u1 | DEBIAN-CVE-2023-49991 |
| Debian:13 | espeak-ng | 1.51+dfsg-12 | DEBIAN-CVE-2023-49991 |
| Debian:14 | espeak-ng | 1.51+dfsg-12 | DEBIAN-CVE-2023-49991 |
| Ubuntu:22.04:LTS | espeak-ng | 1.50+dfsg-10ubuntu0.1 | USN-6858-1 |
| Ubuntu:22.04:LTS | espeak-ng | 1.50+dfsg-10ubuntu0.1 | UBUNTU-CVE-2023-49991 |
Affected products (as reported)
References
- https://github.com/espeak-ng/espeak-ng/issues/1825
- FEDORA-2024-5661c87b25 vendor-advisory
- FEDORA-2024-698737a3c5 vendor-advisory
- https://lists.debian.org/debian-lts-announce/2025/05/msg00050.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2PZEBWPNKPAYJMIM3AS2RP3FL6FX3HS4/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Z5WW6RKHRWLEMCKCQ6UZCXWC5J7UWMUQ/