How severe is CVE-2015-7874?

CVE-2015-7874 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2015-7874 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-7874?

CVE-2015-7874 affects Portapps Kitty Portable. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-7874?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2015-7874 published?

CVE-2015-7874 was published on 2020-01-15 and last updated on 2026-06-17.

CVE-2015-7874

CVE-2015-7874 is a critical-severity vulnerability in Portapps Kitty Portable with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 14% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-120.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 14% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Portapps Kitty Portable
Published: 2020-01-15
Last modified: 2026-06-17

Description

Buffer overflow in the chat server in KiTTY Portable 0.65.0.2p and earlier allows remote attackers to execute arbitrary code via a long nickname.

Frequently asked questions

What is CVE-2015-7874?: Buffer overflow in the chat server in KiTTY Portable 0.65.0.2p and earlier allows remote attackers to execute arbitrary code via a long nickname.
How severe is CVE-2015-7874?: CVE-2015-7874 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2015-7874 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-7874?: CVE-2015-7874 affects Portapps Kitty Portable. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-7874?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2015-7874 published?: CVE-2015-7874 was published on 2020-01-15 and last updated on 2026-06-17.

References

https://www.exploit-db.com/exploits/39119/

Affected products (1)

cpe:2.3:a:portapps:kitty_portable:*:*:*:*:*:*:*:*

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