CVE-2021-34563

LOWNVD 3.33.3—

3.3

In PEPPERL+FUCHS WirelessHART-Gateway 3.0.8 and 3.0.9 the HttpOnly attribute is not set on a cookie. This allows the cookie's value to be read or set by client-side JavaScript.

CVSS v3: 3.3
EG Score: 3.3(medium)
EPSS: 14.9%
KEV: Not listed

Published

August 31, 2021

Last Modified

November 21, 2024

References (2)

info@certhttps://cert.vde.com/en-us/advisories/vde-2021-027
af854a3a-2127-422b-91ae-364da2661108https://cert.vde.com/en-us/advisories/vde-2021-027

Weakness Classification(1)

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

CWE-1004

Data Freshness Timeline

(refreshed 9× in last 7d / 9× 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
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 11:15 UTCEG score recompute
2026-05-26 11:15 UTCGHSA enrichment
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2021-34563?

CVE-2021-34563 is a low vulnerability published on August 31, 2021. In PEPPERL+FUCHS WirelessHART-Gateway 3.0.8 and 3.0.9 the HttpOnly attribute is not set on a cookie. This allows the cookie's value to be read or set by client-side JavaScript.

When was CVE-2021-34563 disclosed?

CVE-2021-34563 was first published in the National Vulnerability Database on August 31, 2021, 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-2021-34563 actively exploited?

CVE-2021-34563 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 14.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-34563?

CVE-2021-34563 has a CVSS v3 base score of 3.3 (NVD).

How do I remediate CVE-2021-34563?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-34563, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-34563

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Is Your Infrastructure Affected by CVE-2021-34563?

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CVE-2021-34563

📅 Published

🔄 Last Modified

🔗 References (2)