How severe is CVE-2026-24822?

CVE-2026-24822 has a CVSS 4.0 base score of 10.0, rated critical severity.

Is CVE-2026-24822 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-24822?

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.

Does CVE-2026-24822 have an EU (EUVD) identifier?

Yes. CVE-2026-24822 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4803.

When was CVE-2026-24822 published?

CVE-2026-24822 was published on 2026-01-27 and last updated on 2026-06-17.

CVE-2026-24822

CVE-2026-24822 is a critical-severity vulnerability with a CVSS 4.0 base score of 10.0. 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-122.

Key facts

Severity: Critical (CVSS 4.0 base score 10.0)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-4803
Weakness: CWE-122
Published: 2026-01-27
Last modified: 2026-06-17

Description

Out-of-bounds Write, Heap-based Buffer Overflow vulnerability in ttttupup wxhelper (src modules). This vulnerability is associated with program files mongoose.C. This issue affects wxhelper: through 3.9.10.19-v1.

Frequently asked questions

What is CVE-2026-24822?: Out-of-bounds Write, Heap-based Buffer Overflow vulnerability in ttttupup wxhelper (src modules). This vulnerability is associated with program files mongoose.C. This issue affects wxhelper: through 3.9.10.19-v1.
How severe is CVE-2026-24822?: CVE-2026-24822 has a CVSS 4.0 base score of 10.0, rated critical severity.
Is CVE-2026-24822 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-24822?: 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.
Does CVE-2026-24822 have an EU (EUVD) identifier?: Yes. CVE-2026-24822 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4803.
When was CVE-2026-24822 published?: CVE-2026-24822 was published on 2026-01-27 and last updated on 2026-06-17.

References

https://github.com/ttttupup/wxhelper/pull/515

Other CWE-122 (Heap-based Buffer Overflow) vulnerabilities

CVE-2026-46752 — Critical (CVSS 10.0): Redis Lua HEAP overflow in cjson library vulnerability in Apache Kvrocks. This issue affects Apache Kvrocks: from…
CVE-2025-23123 — Critical (CVSS 10.0): A malicious actor with access to the management network could execute a remote code execution (RCE) by exploiting a…
CVE-2022-34819 — Critical (CVSS 10.0): A vulnerability has been identified in SIMATIC CP 1242-7 V2 (All versions < V3.3.46), SIMATIC CP 1243-1 (All versions <…
CVE-2026-44050 — Critical (CVSS 9.9): A heap-based buffer overflow in the CNID daemon comm_rcv() function in Netatalk 2.0.0 through 4.4.2 allows a remote…
CVE-2026-49841 — Critical (CVSS 9.8): FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to…
CVE-2026-47291 — Critical (CVSS 9.8): Integer overflow or wraparound in Windows HTTP.sys allows an unauthorized attacker to execute code over a network.

Browse all CWE-122 (Heap-based Buffer Overflow) vulnerabilities →