How severe is CVE-2023-26226?

CVE-2023-26226 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-2023-26226 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-26226?

CVE-2023-26226 affects Yandex Yandex Browser. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-26226?

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-2023-26226 have an EU (EUVD) identifier?

Yes. CVE-2023-26226 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-30051.

When was CVE-2023-26226 published?

CVE-2023-26226 was published on 2025-05-30 and last updated on 2026-06-17.

CVE-2023-26226

CVE-2023-26226 is a critical-severity vulnerability in Yandex Yandex Browser with a CVSS 3.x base score of 9.8. 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-416.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 7.4
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-30051
Weakness: CWE-416
Affected product: Yandex Yandex Browser
Published: 2025-05-30
Last modified: 2026-06-17

Description

A use after free memory corruption issue exists in Yandex Browser for Desktop prior to version 24.4.0.682

Frequently asked questions

What is CVE-2023-26226?: A use after free memory corruption issue exists in Yandex Browser for Desktop prior to version 24.4.0.682
How severe is CVE-2023-26226?: CVE-2023-26226 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-2023-26226 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-26226?: CVE-2023-26226 affects Yandex Yandex Browser. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-26226?: 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-2023-26226 have an EU (EUVD) identifier?: Yes. CVE-2023-26226 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-30051.
When was CVE-2023-26226 published?: CVE-2023-26226 was published on 2025-05-30 and last updated on 2026-06-17.

References

https://yandex.com/bugbounty/i/hall-of-fame-browser/

Affected products (1)

cpe:2.3:a:yandex:yandex_browser:*:*:*:*:*:-:*:*

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Other CWE-416 (Use After Free) vulnerabilities

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CVE-2026-4688 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox…
CVE-2025-24085 — Critical (CVSS 10.0): A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.3 and iPadOS 18.3,…
CVE-2024-43102 — Critical (CVSS 10.0): Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of…
CVE-2021-32495 — Critical (CVSS 10.0): Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory…

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