How severe is CVE-2025-2173?

CVE-2025-2173 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 low, integrity none, and availability none.

Is CVE-2025-2173 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-2173?

CVE-2025-2173 affects Zapping-vbi Zvbi. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-2173?

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

Does CVE-2025-2173 have an EU (EUVD) identifier?

Yes. CVE-2025-2173 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-7526.

When was CVE-2025-2173 published?

CVE-2025-2173 was published on 2025-03-11 and last updated on 2026-06-17.

CVE-2025-2173

CVE-2025-2173 is a medium-severity vulnerability in Zapping-vbi Zvbi 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-824.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
CVSS v4: 6.9
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-7526
Weakness: CWE-824
Affected product: Zapping-vbi Zvbi
Published: 2025-03-11
Last modified: 2026-06-17

Description

A vulnerability was found in libzvbi up to 0.2.43. It has been classified as problematic. Affected is the function vbi_strndup_iconv_ucs2 of the file src/conv.c. The manipulation of the argument src_length leads to uninitialized pointer. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 0.2.44 is able to address this issue. The patch is identified as 8def647eea27f7fd7ad33ff79c2d6d3e39948dce. It is recommended to upgrade the affected component. The code maintainer was informed beforehand about the issues. She reacted very fast and highly professional.

Frequently asked questions

What is CVE-2025-2173?: A vulnerability was found in libzvbi up to 0.2.43. It has been classified as problematic. Affected is the function vbi_strndup_iconv_ucs2 of the file src/conv.c. The manipulation of the argument src_length leads to uninitialized pointer. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 0.2.44 is able to address this issue. The patch is identified as 8def647eea27f7fd7ad33ff79c2d6d3e39948dce. It is recommended to upgrade the affected component. The code maintainer was informed beforehand about the issues. She reacted very fast and highly professional.
How severe is CVE-2025-2173?: CVE-2025-2173 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 low, integrity none, and availability none.
Is CVE-2025-2173 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-2173?: CVE-2025-2173 affects Zapping-vbi Zvbi. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-2173?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-2173 have an EU (EUVD) identifier?: Yes. CVE-2025-2173 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-7526.
When was CVE-2025-2173 published?: CVE-2025-2173 was published on 2025-03-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:zapping-vbi:zvbi:*:*:*:*:*:*:*:*

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