CVE-2017-7679

CRITICALEPSS 98th pctl

9.8

CVSS v3

Description

In Apache httpd 2.2.x before 2.2.33 and 2.4.x before 2.4.26, mod_mime can read one byte past the end of a buffer when sending a malicious Content-Type response header.

CWE-126Buffer Over-read CWE-119Buffer Overflow

How to fix

Remediation Available

apache2Debian

Fixed in:2.4.25-4CVE-2017-7679

apache2Ubuntu

Fixed in:2.4.7-1ubuntu4.16USN-3340-1

Fixed in:2.4.18-2ubuntu3.3USN-3340-1

apache2-binUbuntu

Fixed in:2.4.7-1ubuntu4.16USN-3340-1

Fixed in:2.4.18-2ubuntu3.3USN-3340-1

httpdWindows application

Affected:2.2.0 2.2.33Fixed in:2.2.33Apache Lounge

Affected:2.4.0 2.4.26Fixed in:2.4.26Apache Lounge

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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 InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

39.34%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

Related Vulnerabilities

Other CWE-126 (Buffer Over-read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-49285	High	8.6	89%	-	Fix
CVE-2017-7668	High	7.5	57%	-	Fix
CVE-2025-21277	High	7.5	38%	-	Fix
CVE-2024-38071	High	7.5	36%	-	Fix
CVE-2009-2495	Medium	6.5	34%	-	-
CVE-2024-20290	High	7.5	34%	-	Fix

Common questions

How do I fix CVE-2017-7679?

Published advisories record a fix for 4 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2017-7679 being actively exploited?

Not that we know of. CVE-2017-7679 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 39.3% is the estimated probability that it will be exploited in the next 30 days. That is higher than 98% of all scored CVEs.

How severe is CVE-2017-7679?

CVE-2017-7679 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2017-7679 affect?

Published advisories record a fix for apache2 (Debian), apache2 (Ubuntu), apache2-bin (Ubuntu), httpd (Windows application). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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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.