Security Resilience

CVE-2023-49994

Espeak-Ng 1.52

Public PoC
Published
12 December 2023
Modified
04 November 2025
Patch / advisory
View advisory
CVSS Score v3.1 5.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS Score 0.0038 30th percentile
Risk Priority 43 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-49994 is a medium-severity Incorrect Comparison (CWE-697) vulnerability in Espeak-Ng Espeak-Ng. Its CVSS base score is 5.5 (Medium).

Operationally, ranked at the 30th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability Data

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

CWE(s)
CWE-697

Related Threats

CVEs Like This One

CVE-2023-49993Same product: Espeak-Ng Espeak-Ng
CVE-2023-49990Same product: Espeak-Ng Espeak-Ng
CVE-2023-49992Same product: Espeak-Ng Espeak-Ng
CVE-2023-49991Same product: Espeak-Ng Espeak-Ng
CVE-2023-41935Shared CWE-697
CVE-2026-22660Shared CWE-697
CVE-2023-23840Shared CWE-697
CVE-2023-46658Shared CWE-697
CVE-2023-46009Shared CWE-697
CVE-2025-47416Shared CWE-697

Affected Assets

espeak-ng
espeak-ng
1.52

Mitigating Controls

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.20 Addressing information security within supplier agreements partial match
removes
A.5.24 Information security incident management planning and preparation partial match
removes
A.8.25 Secure development life cycle partial match
blocks

Secure development lifecycle includes code review and testing that can catch incorrect comparison logic.

A.8.26 Application security requirements partial match
blocks

Application security requirements can mandate correct comparison logic for security decisions.

A.8.27 Secure system architecture and engineering principles partial match
blocks

Secure architecture principles can require robust comparison mechanisms for access decisions.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly address avoiding incorrect comparison operators and logic.

Hardening callouts derived

DISA STIG baselines are authored against specific weaknesses. Where this CVE cites a broad weakness class, the mapping is not asserted at that abstraction (owner ruling, 2026-09-25: grade only at Base and below), so no rule is shown here rather than a rule shown against the wrong grain.

  • No fine-grained STIG row for CWE-697, a pillar-level weakness, and none of its children carries one either.

References