Is CVE-2016-3630 in the CISA KEV catalog?

No. CVE-2016-3630 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-3630?

CVE-2016-3630 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2016-3630?

CVE-2016-3630 has an EPSS score of 4.83% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-3630?

Upgrade mercurial on debian 11 to 3.7.3-1 or later.

CVE & CISA-KEV Catalog

CVE-2016-3630

HIGHEPSS 91th pctl

8.8

CVSS v3

NVD

Description

The binary delta decoder in Mercurial before 3.7.3 allows remote attackers to execute arbitrary code via a (1) clone, (2) push, or (3) pull command, related to (a) a list sizing rounding error and (b) short records.

CWE-19

How to fix

Remediation Available

mercurialDebian

Fixed in:3.7.3-1CVE-2016-3630

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 InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

4.83%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Vendor Advisory7

Third-Party Advisory5

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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 2026-05-06.