CVE-2020-8261

MEDIUMNVD 4.34.3—Trending — 3 sources updated this week

4.3

A vulnerability in the Pulse Connect Secure / Pulse Policy Secure < 9.1R9 is vulnerable to arbitrary cookie injection.

CVSS v3: 4.3
EG Score: 4.3(medium)
EPSS: 70.1%
KEV: Not listed

Published

October 28, 2020

Last Modified

November 21, 2024

References (2)

support@hackeronehttps://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44601
af854a3a-2127-422b-91ae-364da2661108https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44601

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-120Buffer Copy without Checking Size (Classic Buffer Overflow)

Data Freshness Timeline

(refreshed 8× in last 7d / 8× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-23 05:54 UTCEG score recompute
2026-05-23 05:54 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2020-8261?

CVE-2020-8261 is a medium vulnerability published on October 28, 2020. A vulnerability in the Pulse Connect Secure / Pulse Policy Secure < 9.1R9 is vulnerable to arbitrary cookie injection.

When was CVE-2020-8261 disclosed?

CVE-2020-8261 was first published in the National Vulnerability Database on October 28, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-8261 actively exploited?

CVE-2020-8261 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 70.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-8261?

CVE-2020-8261 has a CVSS v3 base score of 4.3 (NVD).

How do I remediate CVE-2020-8261?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-8261, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2020-8261

📅 Published

🔄 Last Modified

🔗 References (2)