How severe is CVE-2015-3427?

CVE-2015-3427 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2015-3427 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-3427?

CVE-2015-3427 primarily affects Quassel-irc Quassel. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-3427?

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-2015-3427 published?

CVE-2015-3427 was published on 2015-05-14 and last updated on 2026-06-17.

CVE-2015-3427

CVE-2015-3427 is a high-severity vulnerability in Quassel-irc Quassel with a CVSS 2.0 base score of 7.5. 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-89.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Quassel-irc Quassel
Published: 2015-05-14
Last modified: 2026-06-17

Description

Quassel before 0.12.2 does not properly re-initialize the database session when the PostgreSQL database is restarted, which allows remote attackers to conduct SQL injection attacks via a \ (backslash) in a message. NOTE: this vulnerability exists because of an incomplete fix for CVE-2013-4422.

Frequently asked questions

What is CVE-2015-3427?: Quassel before 0.12.2 does not properly re-initialize the database session when the PostgreSQL database is restarted, which allows remote attackers to conduct SQL injection attacks via a \ (backslash) in a message. NOTE: this vulnerability exists because of an incomplete fix for CVE-2013-4422.
How severe is CVE-2015-3427?: CVE-2015-3427 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2015-3427 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-3427?: CVE-2015-3427 primarily affects Quassel-irc Quassel. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-3427?: 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-2015-3427 published?: CVE-2015-3427 was published on 2015-05-14 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:quassel-irc:quassel:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

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