CVE-2023-2794

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2024-04-10. NVD baseline CVSS 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.1Exploit: Elevated riskExposed: 0

A fix is available — apply it.

A flaw was found in ofono, an Open Source Telephony on Linux. A stack overflow bug is triggered within the decode_deliver() function during the SMS decoding. It is assumed that the attack scenario is accessible from a compromised modem, a malicious base station, or just SMS. There is a bound check for this memcpy length in decode_submit(), but it was forgotten in decode_deliver().

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
52(Track*)
EG Risk 52/100SSVC: Track*

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
Severity81% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
1%
EPSS %ILE
68%
KEV
Not listed

Published

April 10, 2024

Last Modified

November 4, 2025

Advisory Details (2)

Auto-updated Sep 13, 2026
Patch available. Sources: redhat.
generic

[SECURITY] Fedora 40 Update: ofono-2.5-1.fc40 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/[email protected]/message/RLAWJAAS3HDI2KMCZXF4DMR3Y4BQNMKO/
redhat Patch Available

2255387 – (CVE-2023-2794, ZDI-CAN-20971) CVE-2023-2794 ofono: SMS Decoder Stack-based Buffer Overflow Remote Code Execution Vulnerability within the decode_deliver() function

https://bugzilla.redhat.com/show_bug.cgi?id=2255387

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuofono-scripts (1.31-3ubuntu3.24.04.1) @ noble2026-05-24ubuntu

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.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
ofono1.31-3 ... 2.19-1 (14 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
ofono1.31-3 ... 2.19-1 (14 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
ofono—1.31-4—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
ofono—1.31-4—

Weakness Classification(1)

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 1× in last 7d / 23× 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 163 total refreshes for this CVE.

  1. 2026-09-16 14:05 UTCEPSS rescore
  2. 2026-09-13 16:44 UTCEPSS rescore
  3. 2026-09-12 14:58 UTCEPSS rescore
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  12. 2026-09-03 00:29 UTCOSV refresh
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  1. 2026-08-18 13:46 UTCEPSS rescore
  2. 2026-08-16 14:53 UTCEPSS rescore
  3. 2026-08-16 12:30 UTCOSV refresh
  4. 2026-08-16 02:12 UTCEPSS rescore
  5. 2026-08-15 01:28 UTCEPSS rescore
  6. 2026-08-13 21:58 UTCEPSS rescore
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  20. 2026-08-01 07:06 UTCOSV refresh
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  35. 2026-07-23 02:20 UTCEG score recompute
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  49. 2026-07-15 01:58 UTCEPSS rescore
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  51. 2026-07-14 14:10 UTCOSV refresh
  52. 2026-07-13 22:28 UTCEPSS rescore
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  74. 2026-06-26 15:07 UTCOSV refresh
  75. 2026-06-25 13:48 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2023-2794?
CVE-2023-2794 is a high vulnerability published on April 10, 2024. A flaw was found in ofono, an Open Source Telephony on Linux. A stack overflow bug is triggered within the decodedeliver() function during the SMS decoding. It is assumed that the attack scenario is accessible from a compromised modem, a malicious base station, or just SMS. There is a bound check…
When was CVE-2023-2794 disclosed?
CVE-2023-2794 was first published in the National Vulnerability Database on April 10, 2024, with the most recent update on November 4, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-2794 actively exploited?
CVE-2023-2794 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 31.9% of all scored CVEs.
What is the CVSS score of CVE-2023-2794?
CVE-2023-2794 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2023-2794?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-2794, 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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