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TI-2023-27346 Aliases CVE-2023-49990GHSA-x7cw-5x7j-jx35

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

Priority MEDIUM 57CWE-120Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
Will not fix Red Hat: no fix planned

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.

Summary

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

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00396 34th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Will not fix Red Hat: no fix planned

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:espeak-ng:espeak-ng:1.52:dev:*:*:*:*:*:*1.52 devVulnerableEspeak-ng
  • cpe:2.3:a:espeak-ng:espeak-ng:1.52:dev:*:*:*:*:*:* Versions 1.52 dev Vulnerable ·Espeak-ng

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 8AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 9AffectedNo fix planned: Will not fix

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-49990
  2. 2026-10-03 Alias added: GHSA-x7cw-5x7j-jx35

References

Exploit 1

Advisory 2

  • TI-2023-27350 Espeak-ng 1.52-dev was discovered to contain a Floating Point Exception via the function PeaksToHarmspect at wavegen.c. CVSS 3.1MEDIUM 5.5
  • TI-2023-27349 Espeak-ng 1.52-dev was discovered to contain a Buffer Overflow via the function ReadClause at readclause.c. CVSS 3.1MEDIUM 5.3
  • TI-2023-27348 Espeak-ng 1.52-dev was discovered to contain a Stack Buffer Overflow via the function RemoveEnding at dictionary.c. CVSS 3.1MEDIUM 5.3
  • TI-2023-27347 Espeak-ng 1.52-dev was discovered to contain a Stack Buffer Underflow via the function… CVSS 3.1MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences