MEDIUM
CVE-2010-4237
CWE-295Published: October 29, 2019· Updated: Jun 16, 2026
5.9
CVSS v3.1
Official Description
Mercurial before 1.6.4 fails to verify the Common Name field of SSL certificates which allows remote attackers who acquire a certificate signed by a Certificate Authority to perform a man-in-the-middle attack.
Technical Analysis
CVE-2010-4237 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 full integrity compromise (data manipulation), with a CVSS base score of 5.9.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Affected Vendors & Products
mercurial1 product(s)
mercurial
Source: NVD CPE · 1 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
All References (8)
→
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=598841Issue Tracking · Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2010-4237Issue Tracking · Third Party Advisory
→
https://bz.mercurial-scm.org/show_bug.cgi?id=2407Vendor Advisory
→
https://security-tracker.debian.org/tracker/CVE-2010-4237Third Party Advisory
→
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=598841Issue Tracking · Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2010-4237Issue Tracking · Third Party Advisory
→
https://bz.mercurial-scm.org/show_bug.cgi?id=2407Vendor Advisory
→
https://security-tracker.debian.org/tracker/CVE-2010-4237Third Party Advisory
Quick Facts
CVE IDCVE-2010-4237
CVSS Score5.9 / 10
SeverityMEDIUM
WeaknessCWE-295
CISA KEVNo
Affected1 vendor(s)
PublishedOct 29, 2019
Related CVEs (CWE-295)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2010-4237 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.