CVE-2023-34095

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 1.5%, top 28% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

cpdb-libs provides frontend and backend libraries for the Common Printing Dialog Backends (CPDB) project. In versions 1.0 through 2.0b4, cpdb-libs is vulnerable to buffer overflows via improper use of scanf(3). cpdb-libs uses the fscanf() and scanf() functions to parse command lines and configuration files, dropping the read string components into fixed-length buffers, but does not limit the length of the strings to be read by fscanf() and scanf() causing buffer overflows when a string is longer than 1023 characters. A patch for this issue is available at commit f181bd1f14757c2ae0f17cc76dc20421a40f30b7. As all buffers have a length of 1024 characters, the patch limits the maximum string length to be read to 1023 by replacing all occurrences of %s with %1023s in all calls of the fscanf() and scanf() functions.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Attend)
EG Risk 75/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS
72.3%
KEV
Not listed

Published

June 14, 2023

Last Modified

April 10, 2025

Advisory Details (6)

Auto-updated Jun 21, 2026
Patch available. Sources: github_commit, github.
generic

cpdb-libs/tools/cpdb-text-frontend.c at 85555fba64d34f53a2fce099b0488904cc48ed35 · OpenPrinting/cpdb-libs · GitHub

https://github.com/OpenPrinting/cpdb-libs/blob/85555fba64d34f53a2fce099b0488904cc48ed35/tools/cpdb-text-frontend.c#L453
generic

cpdb-libs/tools/cpdb-text-frontend.c at 85555fba64d34f53a2fce099b0488904cc48ed35 · OpenPrinting/cpdb-libs · GitHub

https://github.com/OpenPrinting/cpdb-libs/blob/85555fba64d34f53a2fce099b0488904cc48ed35/tools/cpdb-text-frontend.c#L362
generic

cpdb-libs/cpdb/cpdb-frontend.c at 85555fba64d34f53a2fce099b0488904cc48ed35 · OpenPrinting/cpdb-libs · GitHub

https://github.com/OpenPrinting/cpdb-libs/blob/85555fba64d34f53a2fce099b0488904cc48ed35/cpdb/cpdb-frontend.c#L372
generic

oss-security - CVE-2023-34095: cpdb-libs: Buffer overflows via scanf

http://www.openwall.com/lists/oss-security/2023/06/14/7
github Patch Available

buffer overflows via scanf · Advisory · OpenPrinting/cpdb-libs · GitHub

https://github.com/OpenPrinting/cpdb-libs/security/advisories/GHSA-25j7-9gfc-f46x
github_commit Patch Available

commit f181bd1f1475 (OpenPrinting/cpdb-libs)

Patch available: OpenPrinting/cpdb-libs 2.0b5 (contains commit f181bd1f1475)

https://github.com/OpenPrinting/cpdb-libs/commit/f181bd1f14757c2ae0f17cc76dc20421a40f30b7

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibcpdb-libs-tools (2.0~b4-0ubuntu2.1) @ lunar2026-05-24ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 14× in last 7d / 53× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 115 total refreshes for this CVE.

  1. 2026-07-23 14:16 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2023-34095?
CVE-2023-34095 is a critical vulnerability published on June 14, 2023. cpdb-libs provides frontend and backend libraries for the Common Printing Dialog Backends (CPDB) project. In versions 1.0 through 2.0b4, cpdb-libs is vulnerable to buffer overflows via improper use of scanf(3). cpdb-libs uses the fscanf() and scanf() functions to parse command lines and…
When was CVE-2023-34095 disclosed?
CVE-2023-34095 was first published in the National Vulnerability Database on June 14, 2023, with the most recent update on April 10, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-34095 actively exploited?
CVE-2023-34095 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 72.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-34095?
CVE-2023-34095 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2023-34095?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-34095, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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