Is CVE-2023-49993 in the CISA KEV catalog?

No. CVE-2023-49993 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-49993?

CVE-2023-49993 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2023-49993?

CVE-2023-49993 has an EPSS score of 0.40% (32th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-49993?

Upgrade espeak-ng on debian 11 to 1.50+dfsg-7+deb11u2 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2023-49993

MEDIUM

5.3

CVSS v3

NVD

Description

Espeak-ng 1.52-dev was discovered to contain a Buffer Overflow via the function ReadClause at readclause.c.

CWE-120Classic Buffer Overflow

How to fix

Remediation Available

espeak-ngDebian

Fixed in:1.50+dfsg-7+deb11u2CVE-2023-49993

Fixed in:1.51+dfsg-10+deb12u1CVE-2023-49993

Fixed in:1.51+dfsg-12CVE-2023-49993

espeak-ngUbuntu

Fixed in:1.49.2+dfsg-1ubuntu0.1~esm1USN-6858-1

Fixed in:1.50+dfsg-6ubuntu0.1USN-6858-1

Fixed in:1.50+dfsg-10ubuntu0.1USN-6858-1

Fixed in:1.51+dfsg-11ubuntu0.1USN-6858-1

espeak-ng-espeakUbuntu

Fixed in:1.49.2+dfsg-1ubuntu0.1~esm1USN-6858-1

Fixed in:1.50+dfsg-6ubuntu0.1USN-6858-1

Fixed in:1.50+dfsg-10ubuntu0.1USN-6858-1

Fixed in:1.51+dfsg-11ubuntu0.1USN-6858-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityLow

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

Exploit Intelligence

0.40%probability of exploitation in 30 days

32ndpercentile

Low risk: more likely to be exploited than 32% of all known CVEs.

References

Exploit1

github.com

Other references5

Related Vulnerabilities

Other CWE-120 (Classic Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0195	Medium	6.8	100%	-	Fix
CVE-2017-7269	Critical	9.8	100%	KEV	-
CVE-2019-11043	High	8.7	99%	KEV + Ransom	Fix
CVE-2011-4862	High	10.0	95%	-	Fix
CVE-2007-5659	High	7.8	94%	KEV	Fix
CVE-2022-3786	High	7.5	91%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-04.