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Linux Distros Unpatched Vulnerability : CVE-2026-88051

high Nessus Plugin ID 344694

Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

 - Tesseract is an open source OCR engine. In version 5.5.3 and earlier, the callback form of GenericVector::read in src/ccutil/genericvector.h reads the independent int32 fields reserved and size_used_ from a .traineddata model without a cap or an invariant check. reserve(reserved) allocates the backing array, but the callback loop writes size_used_ elements. A crafted TESSDATA_INTTEMP component with version_id 4 or later can therefore set reserved to a small value and size_used_ to a large value when fontinfo_table_.read(fp, read_info) is called from src/classify/intproto.cpp, causing a heap out-of-bounds write of FontInfo structures, heap corruption, a crash, or potentially controlled corruption. No fixed release is available as of this review. (CVE-2026-88051)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2026-88051

https://security-tracker.debian.org/tracker/CVE-2026-88051

https://ubuntu.com/security/CVE-2026-88051

Plugin Details

Severity: High

ID: 344694

File Name: unpatched_CVE_2026_88051.nasl

Version: 1.2

Type: Local

Agent: unix

Family: Misc.

Published: 9/11/2026

Updated: 9/11/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.43

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.9

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:P

CVSS Score Source: CVE-2026-88051

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.5

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.6

Threat Score: 6.1

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, cpe:/o:centos:centos:8, cpe:/o:debian:debian_linux:12.0, cpe:/o:debian:debian_linux:13.0, cpe:/o:debian:debian_linux:14.0, cpe:/o:redhat:enterprise_linux:10, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:canonical:ubuntu_linux:tesseract, p-cpe:/a:centos:centos:tesseract-devel, p-cpe:/a:centos:centos:tesseract-langpack-afr, p-cpe:/a:centos:centos:tesseract-langpack-amh, p-cpe:/a:centos:centos:tesseract-langpack-ara, p-cpe:/a:centos:centos:tesseract-langpack-asm, p-cpe:/a:centos:centos:tesseract-langpack-aze, p-cpe:/a:centos:centos:tesseract-langpack-aze_cyrl, p-cpe:/a:centos:centos:tesseract-langpack-bel, p-cpe:/a:centos:centos:tesseract-langpack-ben, p-cpe:/a:centos:centos:tesseract-langpack-bod, p-cpe:/a:centos:centos:tesseract-langpack-bos, p-cpe:/a:centos:centos:tesseract-langpack-bul, p-cpe:/a:centos:centos:tesseract-langpack-cat, p-cpe:/a:centos:centos:tesseract-langpack-ceb, p-cpe:/a:centos:centos:tesseract-langpack-ces, p-cpe:/a:centos:centos:tesseract-langpack-chi_sim, p-cpe:/a:centos:centos:tesseract-langpack-chi_tra, p-cpe:/a:centos:centos:tesseract-langpack-chr, p-cpe:/a:centos:centos:tesseract-langpack-cym, p-cpe:/a:centos:centos:tesseract-langpack-dan, p-cpe:/a:centos:centos:tesseract-langpack-deu, p-cpe:/a:centos:centos:tesseract-langpack-dzo, p-cpe:/a:centos:centos:tesseract-langpack-ell, p-cpe:/a:centos:centos:tesseract-langpack-enm, p-cpe:/a:centos:centos:tesseract-langpack-epo, p-cpe:/a:centos:centos:tesseract-langpack-est, p-cpe:/a:centos:centos:tesseract-langpack-eus, p-cpe:/a:centos:centos:tesseract-langpack-fas, p-cpe:/a:centos:centos:tesseract-langpack-fin, p-cpe:/a:centos:centos:tesseract-langpack-fra, p-cpe:/a:centos:centos:tesseract-langpack-frk, p-cpe:/a:centos:centos:tesseract-langpack-frm, p-cpe:/a:centos:centos:tesseract-langpack-gle, p-cpe:/a:centos:centos:tesseract-langpack-glg, p-cpe:/a:centos:centos:tesseract-langpack-grc, p-cpe:/a:centos:centos:tesseract-langpack-guj, p-cpe:/a:centos:centos:tesseract-langpack-hat, p-cpe:/a:centos:centos:tesseract-langpack-heb, p-cpe:/a:centos:centos:tesseract-langpack-hin, p-cpe:/a:centos:centos:tesseract-langpack-hrv, p-cpe:/a:centos:centos:tesseract-langpack-hun, p-cpe:/a:centos:centos:tesseract-langpack-iku, p-cpe:/a:centos:centos:tesseract-langpack-ind, p-cpe:/a:centos:centos:tesseract-langpack-isl, p-cpe:/a:centos:centos:tesseract-langpack-ita, p-cpe:/a:centos:centos:tesseract-langpack-ita_old, p-cpe:/a:centos:centos:tesseract-langpack-jav, p-cpe:/a:centos:centos:tesseract-langpack-jpn, p-cpe:/a:centos:centos:tesseract-langpack-kan, p-cpe:/a:centos:centos:tesseract-langpack-kat, p-cpe:/a:centos:centos:tesseract-langpack-kat_old, p-cpe:/a:centos:centos:tesseract-langpack-kaz, p-cpe:/a:centos:centos:tesseract-langpack-khm, p-cpe:/a:centos:centos:tesseract-langpack-kir, p-cpe:/a:centos:centos:tesseract-langpack-kor, p-cpe:/a:centos:centos:tesseract-langpack-lao, p-cpe:/a:centos:centos:tesseract-langpack-lat, p-cpe:/a:centos:centos:tesseract-langpack-lav, p-cpe:/a:centos:centos:tesseract-langpack-lit, p-cpe:/a:centos:centos:tesseract-langpack-mal, p-cpe:/a:centos:centos:tesseract-langpack-mar, p-cpe:/a:centos:centos:tesseract-langpack-mkd, p-cpe:/a:centos:centos:tesseract-langpack-mlt, p-cpe:/a:centos:centos:tesseract-langpack-msa, p-cpe:/a:centos:centos:tesseract-langpack-mya, p-cpe:/a:centos:centos:tesseract-langpack-nep, p-cpe:/a:centos:centos:tesseract-langpack-nld, p-cpe:/a:centos:centos:tesseract-langpack-nor, p-cpe:/a:centos:centos:tesseract-langpack-ori, p-cpe:/a:centos:centos:tesseract-langpack-pan, p-cpe:/a:centos:centos:tesseract-langpack-pol, p-cpe:/a:centos:centos:tesseract-langpack-por, p-cpe:/a:centos:centos:tesseract-langpack-pus, p-cpe:/a:centos:centos:tesseract-langpack-ron, p-cpe:/a:centos:centos:tesseract-langpack-rus, p-cpe:/a:centos:centos:tesseract-langpack-san, p-cpe:/a:centos:centos:tesseract-langpack-sin, p-cpe:/a:centos:centos:tesseract-langpack-slk, p-cpe:/a:centos:centos:tesseract-langpack-slv, p-cpe:/a:centos:centos:tesseract-langpack-spa, p-cpe:/a:centos:centos:tesseract-langpack-spa_old, p-cpe:/a:centos:centos:tesseract-langpack-sqi, p-cpe:/a:centos:centos:tesseract-langpack-srp, p-cpe:/a:centos:centos:tesseract-langpack-srp_latn, p-cpe:/a:centos:centos:tesseract-langpack-swa, p-cpe:/a:centos:centos:tesseract-langpack-swe, p-cpe:/a:centos:centos:tesseract-langpack-syr, p-cpe:/a:centos:centos:tesseract-langpack-tam, p-cpe:/a:centos:centos:tesseract-langpack-tel, p-cpe:/a:centos:centos:tesseract-langpack-tgk, p-cpe:/a:centos:centos:tesseract-langpack-tha, p-cpe:/a:centos:centos:tesseract-langpack-tir, p-cpe:/a:centos:centos:tesseract-langpack-tur, p-cpe:/a:centos:centos:tesseract-langpack-uig, p-cpe:/a:centos:centos:tesseract-langpack-ukr, p-cpe:/a:centos:centos:tesseract-langpack-urd, p-cpe:/a:centos:centos:tesseract-langpack-uzb, p-cpe:/a:centos:centos:tesseract-langpack-uzb_cyrl, p-cpe:/a:centos:centos:tesseract-langpack-vie, p-cpe:/a:centos:centos:tesseract-langpack-yid, p-cpe:/a:centos:centos:tesseract-osd, p-cpe:/a:centos:centos:tesseract, p-cpe:/a:debian:debian_linux:tesseract, p-cpe:/a:redhat:enterprise_linux:tesseract-devel, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-afr, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-amh, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-ara, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-asm, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-aze, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-aze_cyrl, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-bel, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-ben, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-bod, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-bos, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-bul, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-cat, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-ceb, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-ces, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-chi_sim, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-chi_tra, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-chr, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-cym, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-dan, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-deu, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-dzo, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-ell, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-enm, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-epo, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-est, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-eus, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-fas, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-fin, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-fra, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-frk, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-frm, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-gle, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-glg, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-grc, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-guj, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-hat, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-heb, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-hin, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-hrv, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-hun, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-iku, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-ind, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-isl, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-ita, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-ita_old, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-jav, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-jpn, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-kan, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-kat, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-kat_old, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-kaz, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-khm, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-kir, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-kor, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-lao, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-lat, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-lav, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-lit, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-mal, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-mar, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-mkd, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-mlt, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-msa, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-mya, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-nep, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-nld, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-nor, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-ori, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-pan, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-pol, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-por, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-pus, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-ron, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-rus, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-san, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-sin, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-slk, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-slv, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-spa, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-spa_old, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-sqi, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-srp, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-srp_latn, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-swa, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-swe, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-syr, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-tam, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-tel, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-tgk, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-tha, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-tir, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-tur, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-uig, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-ukr, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-urd, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-uzb, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-uzb_cyrl, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-vie, p-cpe:/a:redhat:enterprise_linux:tesseract-langpack-yid, p-cpe:/a:redhat:enterprise_linux:tesseract-osd, p-cpe:/a:redhat:enterprise_linux:tesseract

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 9/10/2026

Reference Information

CVE: CVE-2026-88051