Is CVE-2019-15680 in the CISA KEV catalog?

No. CVE-2019-15680 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-15680?

CVE-2019-15680 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2019-15680?

CVE-2019-15680 has an EPSS score of 2.78% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-15680?

Upgrade libvncclient1 on ubuntu 16.04 to 0.9.10+dfsg-3ubuntu0.16.04.4 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2019-15680

HIGHEPSS 85th pctl

7.5

CVSS v3

NVD

Description

TightVNC code version 1.3.10 contains null pointer dereference in HandleZlibBPP function, which results Denial of System (DoS). This attack appear to be exploitable via network connectivity.

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

libvncclient1Ubuntu

Fixed in:0.9.10+dfsg-3ubuntu0.16.04.4USN-4407-1

Fixed in:0.9.11+dfsg-1ubuntu1.2USN-4407-1

Fixed in:0.9.12+dfsg-9ubuntu0.1USN-4407-1

libvncserverUbuntu

Fixed in:0.9.10+dfsg-3ubuntu0.16.04.4USN-4407-1

Fixed in:0.9.11+dfsg-1ubuntu1.2USN-4407-1

Fixed in:0.9.12+dfsg-9ubuntu0.1USN-4407-1

libvncserver1Ubuntu

Fixed in:0.9.10+dfsg-3ubuntu0.16.04.4USN-4407-1

Fixed in:0.9.11+dfsg-1ubuntu1.2USN-4407-1

Fixed in:0.9.12+dfsg-9ubuntu0.1USN-4407-1

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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

2.78%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Third-Party Advisory1

openwall.com

Other references4

Related Vulnerabilities

Other CWE-476 (NULL Pointer Dereference) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-21758	High	7.5	92%	-	Fix
CVE-2023-21547	High	7.5	88%	-	Fix
CVE-2014-3470	Medium	4.3	86%	-	Fix
CVE-2021-44224	High	8.2	82%	-	Fix
CVE-2016-0742	High	7.5	82%	-	Fix
CVE-2009-1386	Medium	5.0	80%	-	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 2024-11-21.