CVE-2026-75803

criticalpriority · track · 0EPSS 0.002 · 13 %ileDEFRNLUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.23% (13th) EPSS

CVSS 9.1 · critical

Is it mine?

33 products

Check your exposure

Who says so?

3 sources

cert_bund · ncsc_nl · certfr

EPSS · scored 2026-10-22

Issue summary: ChaCha20-Poly1305 and AES-OCB decryption with an empty ciphertext can report success without verifying the supplied authentication tag when the operation is finalized by calling the EVP_Cipher() function. Impact summary: Applications calling EVP_Cipher() on an empty ciphertext and expecting the call to check the AEAD tag may accept forged messages. CWE: CWE-354 (Improper Validation of Integrity Check Value) Description: The EVP_Cipher() API call for AEAD ciphers behaves like a one shot encryption and decryption call. It also verifies the AEAD tag after the decryption operation. However for AES-OCB and ChaCha20-Poly1305 ciphers it skipped the AEAD tag verification when an empty ciphertext was passed to the function. The callers of this function might believe that a successful return indicates a valid AEAD tag for these ciphers, even when that has not truly been validated in this case. FIPS impact: no The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this CVE as the affected algorithms are not FIPS approved and thus not implemented in the FIPS module.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.3–9.8

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondaryexploitability 3.9 · impact 5.2

v3.18.3highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · NCSC-NL NL

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-354USCWE-354US

affected products (33)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
IBM AIX 7.2all versionscert_bundDEcpe:/o:ibm:aix:7.2
IBM AIX 7.3all versionscert_bundDEcpe:/o:ibm:aix:7.3
IBM MQ Operatorall versionscert_bundDEcpe:/a:ibm:mq:operator
IBM VIOS 4.1all versionscert_bundDEcpe:/a:ibm:vios:4.1
IBM i 7.3all versionscert_bundDEcpe:/o:ibm:i:7.3
IBM i 7.4all versionscert_bundDEcpe:/o:ibm:i:7.4
IBM i 7.5all versionscert_bundDEcpe:/o:ibm:i:7.5
IBM i 7.6all versionscert_bundDEcpe:/o:ibm:i:7.6
Oracle Database Server 19.3-19.32all versionscert_bundDEcpe:/a:oracle:database_server:19.3-19.32
Oracle Database Server 21.3-21.23all versionscert_bundDEcpe:/a:oracle:database_server:21.3-21.23
Oracle Database Server 23.4.0-23.26.3all versionscert_bundDEcpe:/a:oracle:database_server:23.4.0-23.26.3
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
RESF Rocky Linuxall versionscert_bundDEcpe:/o:resf:rocky_linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
SUSE openSUSEall versionscert_bundDEcpe:/o:suse:opensuse:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
Open Source OpenSSL< 1.0.2zrcert_bundDE

showing 20 of 33

advisories (6)

Vendor and ecosystem advisories describing this.

NCSC-2026-0445Kwetsbaarheden verholpen in Oracle AnalyticsNL2026-10-21csaf · ncsc_nlNL
Oracle heeft 33 kwetsbaarheden verholpen in diverse Oracle Analytics-producten, waaronder Oracle Business Intelligence Enterprise Edition en Oracle BI Publisher.
WID-SEC-W-2026-3005OpenSSL: Mehrere SchwachstellenDeutsch2026-08-25csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in OpenSSL ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Daten zu manipulieren oder offenzulegen oder einen Denial-of-Service-Zustand herbeizuführen.
WID-SEC-W-2026-3642Meinberg LANTIME: Mehrere SchwachstellenDeutsch2026-09-29csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Meinberg LANTIME ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, Daten offenzulegen oder zu manipulieren, Denial-of-Service-Zustände herbeizuführen, sowie weitere, nicht näher spezifizierte Angriffe zu starten.
WID-SEC-W-2026-4061Oracle Database Server: Mehrere SchwachstellenDeutsch2026-10-20csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Oracle Database Server ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.
CERTFR-2026-AVI-1349Multiples vulnérabilités dans Oracle Database ServerFrançais2026-10-21vendor · certfrFR
CERTFR-2026-AVI-1351Multiples vulnérabilités dans Oracle MySQLFrançais2026-10-21vendor · certfrFR

sources

Which sources assert this record, and when.

cert_bund ncsc_nl certfr NVD CVE.org MITRE

published 2026-08-25modified 2026-09-11

references (6) nvd

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan