- 6.9MediumCVSS base score
- 0.61%Exploitation in 30 daysEPSS · top 50% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By VulDB
- 1 day later
· 1 day later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| VulDBCNA (assigner) | 4.0 | Medium6.9 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N |
| VulDBCNA (assigner) | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| VulDBCNA (assigner) | 3.0 | Medium5.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| VulDBCNA (assigner) | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
| NVDNVD · Analyzed | 4.0 | Medium6.9 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 0.61% · top 50% of all CVEs (11 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.9.
Affected products
libzvbi
- affected 0.2.0
- affected 0.2.1
- affected 0.2.2
- affected 0.2.3
- affected 0.2.4
- affected 0.2.5
- affected 0.2.6
- affected 0.2.7
- affected 0.2.8
- affected 0.2.9
- affected 0.2.10
- affected 0.2.11
- affected 0.2.12
- affected 0.2.13
- affected 0.2.14
- affected 0.2.15
- affected 0.2.16
- affected 0.2.17
- affected 0.2.18
- affected 0.2.19
- affected 0.2.20
- affected 0.2.21
- affected 0.2.22
- affected 0.2.23
- affected 0.2.24
- affected 0.2.25
- affected 0.2.26
- affected 0.2.27
- affected 0.2.28
- affected 0.2.29
- affected 0.2.30
- affected 0.2.31
- affected 0.2.32
- affected 0.2.33
- affected 0.2.34
- affected 0.2.35
- affected 0.2.36
- affected 0.2.37
- affected 0.2.38
- affected 0.2.39
- and 4 more
References
References6
- VDB-299202 | libzvbi conv.c vbi_strndup_iconv_ucs2 uninitialized pointer (opens in a new tab)vdb-entrytechnical-description
- VDB-299202 | CTI Indicators (IOB, IOC, IOA) (opens in a new tab)signaturepermissions-required
- Submit #512798 | Open Source libzvbi 0.2.43 Unitinialized Heap Read (opens in a new tab)third-party-advisory
- https://github.com/zapping-vbi/zvbi/security/advisories/GHSA-g7cg-7gw9-v8cf (opens in a new tab)related
- https://github.com/zapping-vbi/zvbi/commit/8def647eea27f7fd7ad33ff79c2d6d3e39948dce (opens in a new tab)patch
- https://github.com/zapping-vbi/zvbi/releases/tag/v0.2.44 (opens in a new tab)patch
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-7526 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-2173)Record last updated .