CVE-2026-53268 (CVSS 8.2)

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack_irc: fix possible out-of-bounds read When parsing fails after we've matched the command string we should bail out instead of trying to match a different command. This helper should be deprecated, given prevalence of TLS I doubt it has any relevance in 2026.

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CVSS v3.1 Score

8.2

HIGH

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

EPSS — Exploit Prediction

0.0034

Probability of exploitation

0.27%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/0afc802160af0df61ed374fdb97fb34cfe5cdf2f https://git.kernel.org/stable/c/4cdda7f868f48e2f81579371584fdbdce37df2c8 https://git.kernel.org/stable/c/573810f61bcd6b6815e2ff53bbdd2b9c9d747176 https://git.kernel.org/stable/c/66eba0ffce3b7e11449946b4cbbef8ea36112f56 https://git.kernel.org/stable/c/7c34f91305292083253df6a9f6c8ede02d4ccaea https://git.kernel.org/stable/c/8a1d6e40dedfe1068aee094d851bd69e289c9fd6 https://git.kernel.org/stable/c/9e5da2379f968a3ea5a6e38921ab6201576466dc https://git.kernel.org/stable/c/ddddd8271359961e403d11c90c9ba9fc38914f7e

Frequently Asked Questions

What is CVE-2026-53268? +

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack_irc: fix possible out-of-bounds read When parsing fails after we've matched the command string we should bail out instead of trying to match a different command. This helper should be deprecated, given prevalence of TLS I doubt it has any relevance in 2026. It has a CVSS v3.1 base score of 8.2 (HIGH).

How severe is CVE-2026-53268? +

CVE-2026-53268 has a CVSS v3.1 score of 8.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0034, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-53268? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

CVE-2026-53268