Is CVE-2016-8734 in the CISA KEV catalog?

No. CVE-2016-8734 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-8734?

CVE-2016-8734 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2016-8734?

CVE-2016-8734 has an EPSS score of 6.38% (93th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-8734?

Upgrade subversion on debian 11 to 1.9.5-1 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2016-8734

MEDIUMEPSS 93th pctl

6.5

CVSS v3

NVD

Description

Apache Subversion's mod_dontdothat module and HTTP clients 1.4.0 through 1.8.16, and 1.9.0 through 1.9.4 are vulnerable to a denial-of-service attack caused by exponential XML entity expansion. The attack can cause the targeted process to consume an excessive amount of CPU resources or memory.

CWE-400Resource Exhaustion

How to fix

Remediation Available

subversionDebian

Fixed in:1.9.5-1CVE-2016-8734

libapache2-mod-svnUbuntu

Fixed in:1.8.8-1ubuntu3.3USN-3388-1

Fixed in:1.9.3-2ubuntu1.1USN-3388-1

libapache2-svnUbuntu

Fixed in:1.8.8-1ubuntu3.3USN-3388-1

Fixed in:1.9.3-2ubuntu1.1USN-3388-1

libsvn1Ubuntu

Fixed in:1.8.8-1ubuntu3.3USN-3388-1

Fixed in:1.9.3-2ubuntu1.1USN-3388-1

subversionUbuntu

Fixed in:1.8.8-1ubuntu3.3USN-3388-1

Fixed in:1.9.3-2ubuntu1.1USN-3388-1

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 RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

6.38%probability of exploitation in 30 days

93rdpercentile

High risk: more likely to be exploited than 93% of all known CVEs.

References

Vendor Advisory1

subversion.apache.org

Third-Party Advisory3

Other references2

Related Vulnerabilities

Other CWE-400 (Resource Exhaustion) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-44487	High	7.5	100%	KEV	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2011-3192	High	7.8	99%	-	Fix
CVE-2019-11478	Medium	5.3	95%	-	Fix
CVE-2024-25617	Medium	5.3	89%	-	Fix
CVE-2018-1000115	High	7.5	89%	-	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 2026-05-13.