CVE-2025-3277
CVE-2025-3277 is a critical-severity vulnerability in Sqlite 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-190.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v4: 6.9
- EPSS exploit prediction: 1% (49th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-15064
- Weakness: CWE-190
- Affected product: Sqlite
- Published:
- Last modified:
Description
An integer overflow can be triggered in SQLite’s `concat_ws()` function. The resulting, truncated integer is then used to allocate a buffer. When SQLite then writes the resulting string to the buffer, it uses the original, untruncated size and thus a wild Heap Buffer overflow of size ~4GB can be triggered. This can result in arbitrary code execution.
Frequently asked questions
- What is CVE-2025-3277?
- An integer overflow can be triggered in SQLite’s `concat_ws()` function. The resulting, truncated integer is then used to allocate a buffer. When SQLite then writes the resulting string to the buffer, it uses the original, untruncated size and thus a wild Heap Buffer overflow of size ~4GB can be triggered. This can result in arbitrary code execution.
- How severe is CVE-2025-3277?
- CVE-2025-3277 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-2025-3277 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-3277?
- CVE-2025-3277 affects Sqlite. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-3277?
- 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-2025-3277 have an EU (EUVD) identifier?
- Yes. CVE-2025-3277 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-15064.
- When was CVE-2025-3277 published?
- CVE-2025-3277 was published on 2025-04-14 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:sqlite:sqlite:*:*:*:*:*:*:*:*
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