Threat Intel

v0.1

← CVEs

CVE-2026-22796

MED 5.3
Published
2026-01-27
Last Modified
2026-02-02
Affected Apps
31
Affected Devices
189
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Issue summary: A type confusion vulnerability exists in the signature verification of signed PKCS#7 data where an ASN1_TYPE union member is accessed without first validating the type, causing an invalid or NULL pointer dereference when processing malformed PKCS#7 data. Impact summary: An application performing signature verification of PKCS#7 data or calling directly the PKCS7_digest_from_attributes() function can be caused to dereference an invalid or NULL pointer when reading, resulting in a Denial of Service. The function PKCS7_digest_from_attributes() accesses the message digest attribute value without validating its type. When the type is not V_ASN1_OCTET_STRING, this results in accessing invalid memory through the ASN1_TYPE union, causing a crash. Exploiting this vulnerability requires an attacker to provide a malformed signed PKCS#7 to an application that verifies it. The impact of the exploit is just a Denial of Service, the PKCS7 API is legacy and applications should be using the CMS API instead. For these reasons the issue was assessed as Low severity. The FIPS modules in 3.5, 3.4, 3.3 and 3.0 are not affected by this issue, as the PKCS#7 parsing implementation is outside the OpenSSL FIPS module boundary. OpenSSL 3.6, 3.5, 3.4, 3.3, 3.0, 1.1.1 and 1.0.2 are vulnerable to this issue.
Affected Applications in Environment 31
openssl v3.0.13-0ubuntu3.7
58 devices
openssl v1.1.1f-1ubuntu2.24
11 devices
openssl v1:3.5.1-4.el9_7
2 devices
openssl v1:3.2.2-6.el9_5.1
23 devices
openssl v1.1.1w-0+deb11u4
5 devices
openssl v3.0.2-0ubuntu1.21
27 devices
openssl v1.1.1-1ubuntu2.1~18.04.23
1 device
openssl v3.5.5-1~deb13u1
6 devices
openssl v1.1.1w-0+deb11u5
7 devices
openssl v1:3.5.1-7.el9_7
2 devices
openssl v3.5.4-1~deb13u1
3 devices
openssl v1:1.0.2k-26.el7_9
1 device
openssl v1.0.2g-1ubuntu4.20
3 devices
openssl v3.0.18-1~deb12u1
2 devices
openssl v3.5.4-1~deb13u2
3 devices
openssl v1:1.1.1k-14.el8_6
3 devices
openssl v1:3.5.1-5.el9_7
1 device
openssl v1:1.1.1k-15.el8_10
1 device
openssl v1.0.1f-1ubuntu2.27
1 device
openssl v3.0.18-1~deb12u2
12 devices
openssl v1.0.2g-1ubuntu4.20+esm14
1 device
openssl v1:1.1.1k-14.el8_10
3 devices
openssl v1:1.1.1k-14.el8_10
4 devices
openssl v1:3.5.1-7.el9_7
1 device
openssl v1.1.1n-0+deb10u6
1 device
openssl v1:3.2.2-6.0.1.el9_5.1
1 device
openssl v3.4.1-1ubuntu4
1 device
openssl v3.0.17-1~deb12u3
3 devices
openssl v1:3.5.1-3.el9
1 device
openssl v1:3.5.1-7.el10_1
1 device
pyOpenSSL v0.13.1-4.el7
1 device
Affected Devices 189
2ua5171h8k Linux DPCOMPdemoserver Linux DPNCHA-194733 Linux acmedns Linux administrator-SYS-4029GP-TRT2 Linux aggietower Linux ah-ots Linux atc.db.usu.edu Linux auto-score Linux awep1 Linux bacha25 Linux bennett-HP-Z2-SFF-G4-Workstation Linux blakeutil Linux bloodhound Linux capahab Linux cceredcapdb Linux cceredcapweb Linux chat Linux chela03 Linux chela04 Linux chela05 Linux cleanaddressdev.banner.usu.edu Linux csf Linux devjobsub.banner.usu.edu Linux dispatch Linux dist Linux dpapsb-161390.aggies.usu.edu Linux dpapsb-191594.mypc.usu.edu Linux e911-provision Linux educweb Linux el103-02.ece.usu.edu Linux el103-03.ece.usu.edu Linux el103-04.ece.usu.edu Linux el103-05.ece.usu.edu Linux el103-07.ece.usu.edu Linux el103-08.ece.usu.edu Linux el103-09.ece.usu.edu Linux el103-10.ece.usu.edu Linux el103-14.ece.usu.edu Linux el103-15.ece.usu.edu Linux el103-16.ece.usu.edu Linux el103-17.ece.usu.edu Linux el103-18.ece.usu.edu Linux el103-19.ece.usu.edu Linux el103-20.ece.usu.edu Linux el120-01.ece.usu.edu Linux el120-02.ece.usu.edu Linux el120-03.ece.usu.edu Linux el120-04.ece.usu.edu Linux el120-05.ece.usu.edu Linux el120-06.ece.usu.edu Linux el120-08.ece.usu.edu Linux el120-09.ece.usu.edu Linux el120-10.ece.usu.edu Linux el120-11.ece.usu.edu Linux el120-12.ece.usu.edu Linux el120-14.ece.usu.edu Linux elend Linux emby Linux eprocdev.banner.usu.edu Linux ezidadmin Linux ezri-utility-01 Linux facreadyprod.pplant.usu.edu Linux facreadytestrhel.pplant.usu.edu Linux facshibsp2.pplant.usu.edu Linux finch Linux flexnet Linux flo-rida Linux fw Linux gravekeeper Linux gul4.usu.edu Linux guru.cluster Linux hackedpasswords Linux hotcheeto Linux infosec-grafana Linux intune-mcc1 Linux intune-mcc3 Linux iperf Linux itfinance Linux itls-wp Linux jed Linux joek-HP-Z2-SFF-G9-Workstation-Desktop-PC Linux kcm.usu.edu Linux kena-utility Linux kmlab Linux ldap-lb01 Linux ldap-lb02 Linux libki-server Linux librenms Linux librenmsdb Linux log Linux lumbermill Linux mail Linux mail Linux minemeld Linux mirror3 Linux miscdata Linux miscnet Linux monitor01 Linux monitor02 Linux my1 Linux my2 Linux mysql02 Linux netbox Linux nt Linux omekanew Linux oms.db.usu.edu Linux owenclarke-OptiPlex-7090 Linux paymentworksdev.banner.usu.edu Linux portscan01 Linux portscan02 Linux privatebin Linux promnet Linux rcbd Linux rcdb-dev Linux redcapweb Linux refraction Linux s2backups Linux seaweed Linux second-thrifted-tractor Linux sectap1 Linux sentry Linux server1mathusuedu Linux server2math Linux soc Linux solar Linux spencer-funk-HP-Z2-SFF-G5-Workstation Linux starfleetpad Linux steesh Linux storm Linux strat Linux svn.usu.edu Linux sympa.ser321.usu.edu Linux sys-serv-l-301-data Linux thegrid Linux thinkstation Linux thnotes Linux tsutil.it.usu.edu Linux vinmathusuedu Linux vrtour Linux web-lb-stage.usu.edu Linux web-lb01-redirect.usu.edu Linux web-lb01.usu.edu Linux web-lb02-redirect.usu.edu Linux web-lb02.usu.edu Linux web-lb03-redirect.usu.edu Linux web-lb03.usu.edu Linux web-lb04.usu.edu Linux web02.usu.edu Linux web03.usu.edu Linux web04a Linux web05 Linux web06 Linux web08.usu.edu Linux web09.usu.edu Linux web10 Linux web10-awhc Linux web10-awhc Linux web11.usu.edu Linux web12.usu.edu Linux web13.usu.edu Linux web14.usu.edu Linux web15.usu.edu Linux web16.usu.edu Linux web17 Linux web18 Linux web19.usu.edu Linux web20 Linux web21 Linux web22 Linux web23 Linux web24 Linux web25 Linux web27.usu.edu Linux web28 Linux web29.usu.edu Linux web30.usu.edu Linux web31.usu.edu Linux web32.usu.edu Linux web33.usu.edu Linux web34.usu.edu Linux web35.usu.edu Linux web36.usu.edu Linux web37.usu.edu Linux webs.usu.edu Linux webtools Linux wpad Linux yasls Linux zldtst.db.usu.edu Linux
References 6