How severe is CVE-2010-2266?

CVE-2010-2266 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2010-2266 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 22% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-2266?

CVE-2010-2266 affects F5 Nginx. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2010-2266?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2010-2266 published?

CVE-2010-2266 was published on 2010-06-15 and last updated on 2026-06-16.

CVE-2010-2266

CVE-2010-2266 is a medium-severity vulnerability in F5 Nginx with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 22% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-22.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 22% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: F5 Nginx
Published: 2010-06-15
Last modified: 2026-06-16

Description

nginx 0.8.36 allows remote attackers to cause a denial of service (crash) via certain encoded directory traversal sequences that trigger memory corruption, as demonstrated using the "%c0.%c0." sequence.

Frequently asked questions

What is CVE-2010-2266?: nginx 0.8.36 allows remote attackers to cause a denial of service (crash) via certain encoded directory traversal sequences that trigger memory corruption, as demonstrated using the "%c0.%c0." sequence.
How severe is CVE-2010-2266?: CVE-2010-2266 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2010-2266 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 22% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-2266?: CVE-2010-2266 affects F5 Nginx. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2010-2266?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-2266 published?: CVE-2010-2266 was published on 2010-06-15 and last updated on 2026-06-16.

References

http://www.exploit-db.com/exploits/13818/

Affected products (1)

cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*

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Threat intelligence

Threat-intel indicators referencing this CVE:

8.211.195.173 (ipv4-addr)