How severe is CVE-2002-0653?

CVE-2002-0653 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2002-0653 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2002-0653?

CVE-2002-0653 affects Modssl Mod Ssl. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2002-0653?

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.

When was CVE-2002-0653 published?

CVE-2002-0653 was published on 2002-07-11 and last updated on 2026-06-16.

CVE-2002-0653

CVE-2002-0653 is a high-severity vulnerability in Modssl Mod Ssl with a CVSS 3.x base score of 7.8. 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-193.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-193
Affected product: Modssl Mod Ssl
Published: 2002-07-11
Last modified: 2026-06-16

Description

Off-by-one buffer overflow in the ssl_compat_directive function, as called by the rewrite_command hook for mod_ssl Apache module 2.8.9 and earlier, allows local users to execute arbitrary code as the Apache server user via .htaccess files with long entries.

Frequently asked questions

What is CVE-2002-0653?: Off-by-one buffer overflow in the ssl_compat_directive function, as called by the rewrite_command hook for mod_ssl Apache module 2.8.9 and earlier, allows local users to execute arbitrary code as the Apache server user via .htaccess files with long entries.
How severe is CVE-2002-0653?: CVE-2002-0653 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2002-0653 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2002-0653?: CVE-2002-0653 affects Modssl Mod Ssl. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2002-0653?: 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.
When was CVE-2002-0653 published?: CVE-2002-0653 was published on 2002-07-11 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:modssl:mod_ssl:*:*:*:*:*:*:*:*

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CVE-2023-38429 — Critical (CVSS 9.8): An issue was discovered in the Linux kernel before 6.3.4. fs/ksmbd/connection.c in ksmbd has an off-by-one error in…
CVE-2022-34970 — Critical (CVSS 9.8): Crow before 1.0+4 has a heap-based buffer overflow via the function qs_parse in query_string.h. On successful…

Browse all CWE-193 (Off-by-one Error) vulnerabilities →

Threat intelligence

Threat-intel indicators referencing this CVE:

171.100.156.38 (ipv4-addr)