How severe is CVE-2024-42516?

CVE-2024-42516 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2024-42516 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-42516?

CVE-2024-42516 affects Apache Http Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-42516?

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

Does CVE-2024-42516 have an EU (EUVD) identifier?

Yes. CVE-2024-42516 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-54775.

When was CVE-2024-42516 published?

CVE-2024-42516 was published on 2025-07-10 and last updated on 2026-06-17.

CVE-2024-42516

CVE-2024-42516 is a high-severity vulnerability in Apache Http Server with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-54775
Weakness: CWE-20
Affected product: Apache Http Server
Published: 2025-07-10
Last modified: 2026-06-17

Description

HTTP response splitting in the core of Apache HTTP Server allows an attacker who can manipulate the Content-Type response headers of applications hosted or proxied by the server can split the HTTP response. This vulnerability was described as CVE-2023-38709 but the patch included in Apache HTTP Server 2.4.59 did not address the issue. Users are recommended to upgrade to version 2.4.64, which fixes this issue.

Frequently asked questions

What is CVE-2024-42516?: HTTP response splitting in the core of Apache HTTP Server allows an attacker who can manipulate the Content-Type response headers of applications hosted or proxied by the server can split the HTTP response. This vulnerability was described as CVE-2023-38709 but the patch included in Apache HTTP Server 2.4.59 did not address the issue. Users are recommended to upgrade to version 2.4.64, which fixes this issue.
How severe is CVE-2024-42516?: CVE-2024-42516 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2024-42516 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-42516?: CVE-2024-42516 affects Apache Http Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-42516?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-42516 have an EU (EUVD) identifier?: Yes. CVE-2024-42516 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-54775.
When was CVE-2024-42516 published?: CVE-2024-42516 was published on 2025-07-10 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:

37.120.213.13 (ipv4-addr)
50.255.62.89 (ipv4-addr)
147.15.15.226 (ipv4-addr)
45.84.120.3 (ipv4-addr)
77.90.185.88 (ipv4-addr)
77.90.185.87 (ipv4-addr)
74.87.117.150 (ipv4-addr)
61.76.112.4 (ipv4-addr)