How severe is CVE-2024-50383?

CVE-2024-50383 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2024-50383 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-50383?

CVE-2024-50383 affects Botan Project Botan. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-50383?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-50383 have an EU (EUVD) identifier?

Yes. CVE-2024-50383 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-44836.

When was CVE-2024-50383 published?

CVE-2024-50383 was published on 2024-10-23 and last updated on 2026-06-17.

CVE-2024-50383

CVE-2024-50383 is a medium-severity vulnerability in Botan Project Botan with a CVSS 3.x base score of 5.9. 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-203.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-44836
Weakness: CWE-203
Affected product: Botan Project Botan
Published: 2024-10-23
Last modified: 2026-06-17

Description

Botan before 3.6.0, when certain GCC versions are used, has a compiler-induced secret-dependent operation in lib/utils/donna128.h in donna128 (used in Chacha-Poly1305 and x25519). An addition can be skipped if a carry is not set. This was observed for GCC 11.3.0 with -O2 on MIPS, and GCC on x86-i386. (Only 32-bit processors can be affected.)

Frequently asked questions

What is CVE-2024-50383?: Botan before 3.6.0, when certain GCC versions are used, has a compiler-induced secret-dependent operation in lib/utils/donna128.h in donna128 (used in Chacha-Poly1305 and x25519). An addition can be skipped if a carry is not set. This was observed for GCC 11.3.0 with -O2 on MIPS, and GCC on x86-i386. (Only 32-bit processors can be affected.)
How severe is CVE-2024-50383?: CVE-2024-50383 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2024-50383 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-50383?: CVE-2024-50383 affects Botan Project Botan. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-50383?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-50383 have an EU (EUVD) identifier?: Yes. CVE-2024-50383 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-44836.
When was CVE-2024-50383 published?: CVE-2024-50383 was published on 2024-10-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:botan_project:botan:*:*:*:*:*:*:*:*

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