How severe is CVE-2017-15923?

CVE-2017-15923 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2017-15923 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-15923?

CVE-2017-15923 primarily affects Konversation. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-15923?

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-2017-15923 published?

CVE-2017-15923 was published on 2017-11-15 and last updated on 2026-06-17.

CVE-2017-15923

CVE-2017-15923 is a high-severity vulnerability in Konversation with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Konversation
Published: 2017-11-15
Last modified: 2026-06-17

Description

Konversation 1.4.x, 1.5.x, 1.6.x, and 1.7.x before 1.7.3 allow remote attackers to cause a denial of service (crash) via vectors related to parsing of IRC color formatting codes.

Frequently asked questions

What is CVE-2017-15923?: Konversation 1.4.x, 1.5.x, 1.6.x, and 1.7.x before 1.7.3 allow remote attackers to cause a denial of service (crash) via vectors related to parsing of IRC color formatting codes.
How severe is CVE-2017-15923?: CVE-2017-15923 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-15923 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-15923?: CVE-2017-15923 primarily affects Konversation. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-15923?: 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-2017-15923 published?: CVE-2017-15923 was published on 2017-11-15 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:konversation:konversation:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

More vulnerabilities in Konversation

CVE-2009-5050 — High (CVSS 7.5): konversation before 1.2.3 allows attackers to cause a denial of service.
CVE-2007-4400 — Medium (CVSS 6.8): CRLF injection vulnerability in the included media script in Konversation allows user-assisted remote attackers to…

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