How severe is CVE-2017-11455?

CVE-2017-11455 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-11455 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-11455?

CVE-2017-11455 primarily affects Ivanti Connect Secure. In total, 47 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-11455?

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-2017-11455 published?

CVE-2017-11455 was published on 2017-08-29 and last updated on 2026-06-17.

CVE-2017-11455

CVE-2017-11455 is a high-severity vulnerability in Ivanti Connect Secure with a CVSS 3.x base score of 8.8. 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-352.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Ivanti Connect Secure
Published: 2017-08-29
Last modified: 2026-06-17

Description

diag.cgi in Pulse Connect Secure 8.2R1 through 8.2R5, 8.1R1 through 8.1R10 and Pulse Policy Secure 5.3R1 through 5.3R5, 5.2R1 through 5.2R8, and 5.1R1 through 5.1R10 allow remote attackers to hijack the authentication of administrators for requests to start tcpdump, related to the lack of anti-CSRF tokens.

Frequently asked questions

What is CVE-2017-11455?: diag.cgi in Pulse Connect Secure 8.2R1 through 8.2R5, 8.1R1 through 8.1R10 and Pulse Policy Secure 5.3R1 through 5.3R5, 5.2R1 through 5.2R8, and 5.1R1 through 5.1R10 allow remote attackers to hijack the authentication of administrators for requests to start tcpdump, related to the lack of anti-CSRF tokens.
How severe is CVE-2017-11455?: CVE-2017-11455 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-11455 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-11455?: CVE-2017-11455 primarily affects Ivanti Connect Secure. In total, 47 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-11455?: 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-2017-11455 published?: CVE-2017-11455 was published on 2017-08-29 and last updated on 2026-06-17.

References

Affected products (47)

cpe:2.3:a:ivanti:connect_secure:8.1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.1r1.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.2r1.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.2r1.1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.2r2.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.2r3.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.2r3.1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.2r4.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.2r4.1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_connect_secure:8.2r5.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r1.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r1.1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r2.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r2.1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r3.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r3.2:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r4.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r5.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r6.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r7.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r7.1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r8.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r9.1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1r10:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2r1.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2r2.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2r3.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2r3.2:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2r4.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2r5.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2r6.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2r7.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2r7.1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2r8.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.3r1.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.3r1.1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.3r2.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.3r3.0:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.3r3.1:*:*:*:*:*:*:*
cpe:2.3:a:pulsesecure:pulse_policy_secure:5.3r4.0:*:*:*:*:*:*:*

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