Is CVE-2025-30677 in the CISA KEV catalog?

No. CVE-2025-30677 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-30677?

CVE-2025-30677 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2025-30677?

CVE-2025-30677 has an EPSS score of 0.61% (45th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-30677?

Upgrade pulsar to 4.0.4 or later.

CVE & CISA-KEV Catalog

CVE-2025-30677

MEDIUM

6.5

CVSS v3

NVD

Description

Apache Pulsar contains multiple connectors for integrating with Apache Kafka. The Pulsar IO Apache Kafka Source Connector, Sink Connector, and Kafka Connect Adaptor Sink Connector log sensitive configuration properties in plain text in application logs. This vulnerability can lead to unintended exposure of credentials in log files, potentially allowing attackers with access to these logs to obtain Apache Kafka credentials. The vulnerability's impact is limited by the fact that an attacker would need access to the application logs to exploit this issue. This issue affects Apache Pulsar IO's Apache Kafka connectors in all versions before 3.0.11, 3.3.6, and 4.0.4. 3.0.x version users should upgrade to at least 3.0.11. 3.3.x version users should upgrade to at least 3.3.6. 4.0.x version users should upgrade to at least 4.0.4. Users operating versions prior to those listed above should upgrade to the aforementioned patched versions or newer versions.

CWE-532

How to fix

Remediation Available

pulsarNVD

Affected:>= 4.0.0, < 4.0.4Fixed in:4.0.4CVE-2025-30677derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

0.61%probability of exploitation in 30 days

45thpercentile

Moderate risk: more likely to be exploited than 45% of all known CVEs.

References

Vendor Advisory2

Third-Party Advisory1

openwall.com

Related Vulnerabilities

Other CWE-532 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-1622	Medium	5.3	79%	-	-
CVE-2020-35234	High	7.5	63%	-	Fix
CVE-2023-43261	High	7.5	60%	-	Fix
CVE-2024-20440	High	7.5	51%	-	-
CVE-2018-3609	High	8.1	22%	-	-
CVE-2018-8719	Medium	5.3	16%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-07-15.