How severe is CVE-2015-6964?

CVE-2015-6964 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2015-6964 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-6964?

CVE-2015-6964 affects Multibit Multibit Hd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-6964?

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

When was CVE-2015-6964 published?

CVE-2015-6964 was published on 2023-09-25 and last updated on 2026-06-17.

CVE-2015-6964

CVE-2015-6964 is a medium-severity vulnerability in Multibit Multibit Hd with a CVSS 3.x base score of 5.3. 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-697.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-697
Affected product: Multibit Multibit Hd
Published: 2023-09-25
Last modified: 2026-06-17

Description

MultiBit HD before 0.1.2 allows attackers to conduct bit-flipping attacks that insert unspendable Bitcoin addresses into the list that MultiBit uses to send fees to the developers. (Attackers cannot realistically steal these fees for themselves.) This occurs because there is no message authentication code (MAC).

Frequently asked questions

What is CVE-2015-6964?: MultiBit HD before 0.1.2 allows attackers to conduct bit-flipping attacks that insert unspendable Bitcoin addresses into the list that MultiBit uses to send fees to the developers. (Attackers cannot realistically steal these fees for themselves.) This occurs because there is no message authentication code (MAC).
How severe is CVE-2015-6964?: CVE-2015-6964 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2015-6964 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-6964?: CVE-2015-6964 affects Multibit Multibit Hd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-6964?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-6964 published?: CVE-2015-6964 was published on 2023-09-25 and last updated on 2026-06-17.

References

https://web.archive.org/web/20160506095434/https://multibit.org/blog/2015/07/25/bit-flipping-attack.html

Affected products (1)

cpe:2.3:a:multibit:multibit_hd:*:*:*:*:*:*:*:*

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