How severe is CVE-2025-61146?

CVE-2025-61146 has a CVSS 3.x base score of 4.0, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2025-61146 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-61146?

CVE-2025-61146 affects Saitoha Libsixel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-61146?

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

Does CVE-2025-61146 have an EU (EUVD) identifier?

Yes. CVE-2025-61146 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-207617.

When was CVE-2025-61146 published?

CVE-2025-61146 was published on 2026-02-23 and last updated on 2026-06-17.

CVE-2025-61146

CVE-2025-61146 is a medium-severity vulnerability in Saitoha Libsixel with a CVSS 3.x base score of 4.0. 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-401.

Key facts

Severity: Medium (CVSS 3.x base score 4.0)
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-207617
Weakness: CWE-401
Affected product: Saitoha Libsixel
Published: 2026-02-23
Last modified: 2026-06-17

Description

saitoha libsixel until v1.8.7 was discovered to contain a memory leak via the component malloc_stub.c.

Frequently asked questions

What is CVE-2025-61146?: saitoha libsixel until v1.8.7 was discovered to contain a memory leak via the component malloc_stub.c.
How severe is CVE-2025-61146?: CVE-2025-61146 has a CVSS 3.x base score of 4.0, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2025-61146 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-61146?: CVE-2025-61146 affects Saitoha Libsixel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-61146?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-61146 have an EU (EUVD) identifier?: Yes. CVE-2025-61146 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-207617.
When was CVE-2025-61146 published?: CVE-2025-61146 was published on 2026-02-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:saitoha:libsixel:*:*:*:*:*:*:*:*

More vulnerabilities in Saitoha Libsixel

CVE-2019-19638 — Critical (CVSS 9.8): An issue was discovered in libsixel 1.8.2. There is a heap-based buffer overflow in the function load_pnm at frompnm.c,…
CVE-2019-19637 — Critical (CVSS 9.8): An issue was discovered in libsixel 1.8.2. There is an integer overflow in the function sixel_decode_raw_impl at…
CVE-2019-19636 — Critical (CVSS 9.8): An issue was discovered in libsixel 1.8.2. There is an integer overflow in the function sixel_encode_body at tosixel.c.
CVE-2019-19635 — Critical (CVSS 9.8): An issue was discovered in libsixel 1.8.2. There is a heap-based buffer overflow in the function sixel_decode_raw_impl…
CVE-2022-27046 — High (CVSS 8.8): libsixel 1.8.6 suffers from a Heap Use After Free vulnerability in in libsixel/src/dither.c:388.
CVE-2022-27044 — High (CVSS 8.8): libsixel 1.8.6 is affected by Buffer Overflow in libsixel/src/quant.c:876.

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