How severe is CVE-2017-12965?

CVE-2017-12965 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-2017-12965 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-12965?

CVE-2017-12965 affects Apache2triad. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-12965?

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-2017-12965 published?

CVE-2017-12965 was published on 2017-08-23 and last updated on 2026-06-17.

CVE-2017-12965

CVE-2017-12965 is a critical-severity vulnerability in Apache2triad with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 16% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-384.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 16% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-384
Affected product: Apache2triad
Published: 2017-08-23
Last modified: 2026-06-17

Description

Session fixation vulnerability in Apache2Triad 1.5.4 allows remote attackers to hijack web sessions via the PHPSESSID parameter.

Frequently asked questions

What is CVE-2017-12965?: Session fixation vulnerability in Apache2Triad 1.5.4 allows remote attackers to hijack web sessions via the PHPSESSID parameter.
How severe is CVE-2017-12965?: CVE-2017-12965 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-2017-12965 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-12965?: CVE-2017-12965 affects Apache2triad. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-12965?: 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-2017-12965 published?: CVE-2017-12965 was published on 2017-08-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:apache2triad:apache2triad:1.5.4:*:*:*:*:*:*:*

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