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CVE-2017-12627

33
FAUCET Score

CVE-2017-12627 is a critical null pointer dereference vulnerability affecting Apache Xerces-C XML Parser library versions prior to 3.2.1. This flaw allows an unauthenticated attacker to remotely trigger a denial of service, and potentially achieve full compromise of confidentiality, integrity, and availability, due to the processing of external DTD paths. Despite its critical CVSS score of 9.8, there is currently no public exploit code available, nor is there evidence of active exploitation or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.2.1CPE matchmatch criteria
cpe:2.3:a:apache:xerces-c\+\+:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
8.51%
Probability of exploitation in next 30 days
EPSS Percentile
94.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0851 is in the 90th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (4)

redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: xerces-c
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: xerces-c
redhatend of lifevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: xerces-c
redhatend of lifevia redhat_api
Product: Red Hat Enterprise MRG 3Fixed in: xerces-c

Vendor Advisories (1)

redhatCVE-2017-12627Moderate

xerces-c: Null pointer dereference while processing the path to DTD allows denial of service

Mar 1, 2018

References

seclists.org / oss-sec/2018/q1/203
Mailing ListThird Party Advisory
kc.mcafee.com / corporate/index
lists.debian.org / debian-lts-announce/2018/03/msg00032.html
securityfocus.com / bid/103219
Third Party AdvisoryVDB Entry
xerces.apache.org / xerces-c/secadv/CVE-2017-12627.txt
Vendor Advisory