HOMEVULNERABILITIESCVE-2018-1000132
CRITICAL

CVE-2018-1000132

CWE-732Published: March 14, 2018· Updated: Jun 17, 2026

9.1
CVSS v3.1

Official Description

Mercurial version 4.5 and earlier contains a Incorrect Access Control (CWE-285) vulnerability in Protocol server that can result in Unauthorized data access. This attack appear to be exploitable via network connectivity. This vulnerability appears to have been fixed in 4.5.1.

NVD Source

Technical Analysis

CVE-2018-1000132 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 9.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected Vendors & Products

Debian1 product(s)
debian linux
mercurial1 product(s)
mercurial
Source: NVD CPE · 3 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/03/msg00034.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/07/msg00005.html
ADVISORYhttps://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.5.1_.2F_4.5.2_.282018-03-06.29
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/03/msg00034.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/07/msg00005.html
ADVISORYhttps://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.5.1_.2F_4.5.2_.282018-03-06.29

All References (10)

→
https://access.redhat.com/errata/RHSA-2019:2276
→
https://lists.debian.org/debian-lts-announce/2018/03/msg00034.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2018/07/msg00005.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/07/msg00032.html
→
https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.5.1_.2F_4.5.2_.282018-03-06.29Release Notes · Vendor Advisory
→
https://access.redhat.com/errata/RHSA-2019:2276
→
https://lists.debian.org/debian-lts-announce/2018/03/msg00034.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2018/07/msg00005.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/07/msg00032.html
→
https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.5.1_.2F_4.5.2_.282018-03-06.29Release Notes · Vendor Advisory

Quick Facts

CVE IDCVE-2018-1000132
CVSS Score9.1 / 10
SeverityCRITICAL
WeaknessCWE-732
CISA KEVNo
Affected2 vendor(s)
PublishedMar 14, 2018

Related CVEs (CWE-732)

CVE-2026-9508
10.0
CVE-2025-12004
10.0
CVE-2014-125121
10.0
CVE-2021-33509
9.9
CVE-2023-40622
9.9
CVE-2026-32048
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-1000132 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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