How severe is CVE-2017-7679?

CVE-2017-7679 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-7679 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 39% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-7679?

CVE-2017-7679 affects Apache Http Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-7679?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2017-7679 published?

CVE-2017-7679 was published on 2017-06-20 and last updated on 2026-06-17.

CVE-2017-7679

CVE-2017-7679 is a critical-severity vulnerability in Apache Http Server with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 39% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 39% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Apache Http Server
Published: 2017-06-20
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2017-7679?: 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.
How severe is CVE-2017-7679?: CVE-2017-7679 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-7679 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 39% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-7679?: CVE-2017-7679 affects Apache Http Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-7679?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2017-7679 published?: CVE-2017-7679 was published on 2017-06-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*

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Threat intelligence

Threat-intel indicators referencing this CVE:

218.4.91.163 (ipv4-addr)
79.137.34.248 (ipv4-addr)
61.76.112.4 (ipv4-addr)
45.120.115.150 (ipv4-addr)
203.192.232.180 (ipv4-addr)
177.53.215.134 (ipv4-addr)
166.62.41.190 (ipv4-addr)
151.80.141.196 (ipv4-addr)