CWE-834
DiscouragedExcessive Iteration
Abstraction: Class · Status: Incomplete
The product performs an iteration or loop without sufficiently limiting the number of times that the loop is executed.
131 vulnerabilities reference this CWE, most recent first.
CVE-2019-3558 (GCVE-0-2019-3558)
Vulnerability from cvelistv5 – Published: 2019-05-06 15:15 – Updated: 2024-08-04 19:12- CWE-834 - Excessive Iteration (CWE-834)
| URL | Tags |
|---|---|
| https://github.com/facebook/fbthrift/commit/c5d6e… | x_refsource_MISC |
| https://www.facebook.com/security/advisories/cve-… | x_refsource_MISC |
| http://www.securityfocus.com/bid/108274 | vdb-entryx_refsource_BID |
| https://lists.apache.org/thread.html/rd0e44e8ef71… | mailing-listx_refsource_MLIST |
| Vendor | Product | Version | |
|---|---|---|---|
| Facebook Thrift |
Affected:
v2019.02.18.00
Affected: unspecified , < v2019.02.18.00 (custom) |
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CVE-2019-3552 (GCVE-0-2019-3552)
Vulnerability from cvelistv5 – Published: 2019-05-06 15:15 – Updated: 2024-08-04 19:12- CWE-834 - Excessive Iteration (CWE-834)
| URL | Tags |
|---|---|
| https://github.com/facebook/fbthrift/commit/c5d6e… | x_refsource_MISC |
| http://www.securityfocus.com/bid/108279 | vdb-entryx_refsource_BID |
| https://lists.apache.org/thread.html/rd0e44e8ef71… | mailing-listx_refsource_MLIST |
| Vendor | Product | Version | |
|---|---|---|---|
| Facebook Thrift |
Affected:
v2019.02.18.00
Affected: unspecified , < v2019.02.18.00 (custom) |
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CVE-2018-20805 (GCVE-0-2018-20805)
Vulnerability from cvelistv5 – Published: 2020-11-23 15:20 – Updated: 2024-09-17 03:08- CWE-834 - Excessive Iteration
| URL | Tags |
|---|---|
| https://jira.mongodb.org/browse/SERVER-38164 | x_refsource_CONFIRM |
| Vendor | Product | Version | |
|---|---|---|---|
| MongoDB Inc. | MongoDB Server |
Affected:
3.6 , < 3.6.10
(custom)
Affected: 4.0 , < 4.0.5 (custom) |
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GHSA-248M-82V9-Q6G6
Vulnerability from github – Published: 2026-06-12 18:29 – Updated: 2026-06-12 18:29Impact
An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires cross-reference streams with /W [0 0 0] values and large /Size values.
Patches
This has been fixed in pypdf==6.12.0.
Workarounds
If developers are unable to upgrade their apps immediately, they should consider applying the changes from PR #3791.
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},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "pypdf: Possible long runtimes for zero-only width values in cross-reference streamsuntimes for zero-only width values in cross-reference streams"
}
GHSA-289V-JMV7-6XMX
Vulnerability from github – Published: 2022-05-24 17:47 – Updated: 2022-05-24 17:47In ASUS RT-AX3000, ZenWiFi AX (XT8), RT-AX88U, and other ASUS routers with firmware < 3.0.0.4.386.42095 or < 9.0.0.4.386.41994, when IPv6 is used, a routing loop can occur that generates excessive network traffic between an affected device and its upstream ISP's router. This occurs when a link prefix route points to a point-to-point link, a destination IPv6 address belongs to the prefix and is not a local IPv6 address, and a router advertisement is received with at least one global unique IPv6 prefix for which the on-link flag is set.
{
"affected": [],
"aliases": [
"CVE-2021-3128"
],
"database_specific": {
"cwe_ids": [
"CWE-834"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-04-12T19:15:00Z",
"severity": "HIGH"
},
"details": "In ASUS RT-AX3000, ZenWiFi AX (XT8), RT-AX88U, and other ASUS routers with firmware \u003c 3.0.0.4.386.42095 or \u003c 9.0.0.4.386.41994, when IPv6 is used, a routing loop can occur that generates excessive network traffic between an affected device and its upstream ISP\u0027s router. This occurs when a link prefix route points to a point-to-point link, a destination IPv6 address belongs to the prefix and is not a local IPv6 address, and a router advertisement is received with at least one global unique IPv6 prefix for which the on-link flag is set.",
"id": "GHSA-289v-jmv7-6xmx",
"modified": "2022-05-24T17:47:10Z",
"published": "2022-05-24T17:47:10Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3128"
},
{
"type": "WEB",
"url": "https://www.asus.com/Networking-IoT-Servers/Whole-Home-Mesh-WiFi-System/ZenWiFi-WiFi-Systems/ASUS-ZenWiFi-AX-XT8-/HelpDesk_BIOS"
},
{
"type": "WEB",
"url": "https://www.asus.com/Networking-IoT-Servers/WiFi-6/All-series/RT-AX3000/HelpDesk_BIOS"
},
{
"type": "WEB",
"url": "https://www.asus.com/Networking-IoT-Servers/WiFi-6/All-series/RT-AX55/HelpDesk_BIOS"
},
{
"type": "WEB",
"url": "https://www.asus.com/Networking-IoT-Servers/WiFi-6/All-series/RT-AX56U/HelpDesk_BIOS"
},
{
"type": "WEB",
"url": "https://www.asus.com/Networking-IoT-Servers/WiFi-6/All-series/RT-AX58U/HelpDesk_BIOS"
},
{
"type": "WEB",
"url": "https://www.asus.com/Networking-IoT-Servers/WiFi-6/All-series/RT-AX68U/HelpDesk_BIOS"
},
{
"type": "WEB",
"url": "https://www.asus.com/Networking-IoT-Servers/WiFi-6/All-series/RT-AX82U/HelpDesk_BIOS"
},
{
"type": "WEB",
"url": "https://www.asus.com/Networking-IoT-Servers/WiFi-6/All-series/RT-AX86U/HelpDesk_BIOS"
},
{
"type": "WEB",
"url": "https://www.asus.com/Networking-IoT-Servers/WiFi-6/All-series/RT-AX88U/HelpDesk_BIOS"
},
{
"type": "WEB",
"url": "https://www.asus.com/Networking-IoT-Servers/WiFi-Routers/ASUS-WiFi-Routers/RT-AC66U-B1/HelpDesk_Download"
},
{
"type": "WEB",
"url": "https://www.asus.com/supportonly/RT-AC1750_B1/HelpDesk_download"
},
{
"type": "WEB",
"url": "https://www.asus.com/supportonly/RT-AC1900/HelpDesk_download"
},
{
"type": "WEB",
"url": "https://www.asus.com/supportonly/RT-AC1900P/HelpDesk_download"
},
{
"type": "WEB",
"url": "https://www.asus.com/supportonly/RT-AC1900U/HelpDesk_download"
},
{
"type": "WEB",
"url": "https://www.asus.com/supportonly/RT-AC2900/HelpDesk_download"
},
{
"type": "WEB",
"url": "https://www.asus.com/supportonly/RT-AC3100/HelpDesk_download"
},
{
"type": "WEB",
"url": "https://www.asus.com/supportonly/RT-AC5300/HelpDesk_download"
},
{
"type": "WEB",
"url": "https://www.asus.com/supportonly/RT-AC58U/HelpDesk_download"
},
{
"type": "WEB",
"url": "https://www.asus.com/supportonly/RT-AC65U/HelpDesk_download"
},
{
"type": "WEB",
"url": "https://www.asus.com/supportonly/RT-AC68P/HelpDesk_download"
},
{
"type": "WEB",
"url": "https://www.asus.com/supportonly/RT-AC68R/HelpDesk_download"
},
{
"type": "WEB",
"url": "https://www.asus.com/supportonly/RT-AC68RW/HelpDesk_download"
},
{
"type": "WEB",
"url": "https://www.asus.com/supportonly/RT-AC68U/HelpDesk_download"
},
{
"type": "WEB",
"url": "https://www.asus.com/supportonly/RT-AC68W/HelpDesk_download"
},
{
"type": "WEB",
"url": "https://www.asus.com/supportonly/RT-AC85U/HelpDesk_download"
},
{
"type": "WEB",
"url": "https://www.asus.com/supportonly/RT-AC86U/HelpDesk_download"
},
{
"type": "WEB",
"url": "https://www.asus.com/supportonly/RT-AC88U/HelpDesk_download"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-2F25-PFQ3-C7H8
Vulnerability from github – Published: 2026-05-08 23:06 – Updated: 2026-05-08 23:06Impact
Anyone loading untrusted ASN1 files (eg. X509 certificates, RSA PKCS8 private or public keys, etc)
Patches
https://github.com/phpseclib/phpseclib/commit/964d78101a70305df33f442f5490f0adb3b7e77f
Workarounds
No.
References
https://github.com/phpseclib/phpseclib/commit/964d78101a70305df33f442f5490f0adb3b7e77f https://www.usenix.org/system/files/usenixsecurity25-shi-bing.pdf
{
"affected": [
{
"package": {
"ecosystem": "Packagist",
"name": "phpseclib/phpseclib"
},
"ranges": [
{
"events": [
{
"introduced": "3.0.0"
},
{
"fixed": "3.0.34"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2023-49316"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-834"
],
"github_reviewed": true,
"github_reviewed_at": "2026-05-08T23:06:50Z",
"nvd_published_at": null,
"severity": "HIGH"
},
"details": "### Impact\nAnyone loading untrusted ASN1 files (eg. X509 certificates, RSA PKCS8 private or public keys, etc)\n\n### Patches\nhttps://github.com/phpseclib/phpseclib/commit/964d78101a70305df33f442f5490f0adb3b7e77f\n\n### Workarounds\nNo.\n\n### References\nhttps://github.com/phpseclib/phpseclib/commit/964d78101a70305df33f442f5490f0adb3b7e77f\nhttps://www.usenix.org/system/files/usenixsecurity25-shi-bing.pdf",
"id": "GHSA-2f25-pfq3-c7h8",
"modified": "2026-05-08T23:06:50Z",
"published": "2026-05-08T23:06:50Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/phpseclib/phpseclib/security/advisories/GHSA-2f25-pfq3-c7h8"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-49316"
},
{
"type": "WEB",
"url": "https://github.com/phpseclib/phpseclib/commit/964d78101a70305df33f442f5490f0adb3b7e77f"
},
{
"type": "WEB",
"url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/phpseclib/phpseclib/CVE-2023-49316.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/phpseclib/phpseclib"
},
{
"type": "WEB",
"url": "https://github.com/phpseclib/phpseclib/releases/tag/3.0.34"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "Phpseclib needs guardrails on large binaryfield integers"
}
GHSA-2G4J-2XQP-4HQ5
Vulnerability from github – Published: 2022-05-13 01:14 – Updated: 2025-04-20 03:44In coders/xbm.c in ImageMagick 7.0.6-1 Q16, a DoS in ReadXBMImage() due to lack of an EOF (End of File) check might cause huge CPU consumption. When a crafted XBM file, which claims large rows and columns fields in the header but does not contain sufficient backing data, is provided, the loop over the rows would consume huge CPU resources, since there is no EOF check inside the loop.
{
"affected": [],
"aliases": [
"CVE-2017-14175"
],
"database_specific": {
"cwe_ids": [
"CWE-834"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-09-07T06:29:00Z",
"severity": "HIGH"
},
"details": "In coders/xbm.c in ImageMagick 7.0.6-1 Q16, a DoS in ReadXBMImage() due to lack of an EOF (End of File) check might cause huge CPU consumption. When a crafted XBM file, which claims large rows and columns fields in the header but does not contain sufficient backing data, is provided, the loop over the rows would consume huge CPU resources, since there is no EOF check inside the loop.",
"id": "GHSA-2g4j-2xqp-4hq5",
"modified": "2025-04-20T03:44:27Z",
"published": "2022-05-13T01:14:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-14175"
},
{
"type": "WEB",
"url": "https://github.com/ImageMagick/ImageMagick/issues/712"
},
{
"type": "WEB",
"url": "https://github.com/ImageMagick/ImageMagick/commit/d9a8234d211da30baf9526fbebe9a8438ea7e11c"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2019/05/msg00015.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2020/09/msg00007.html"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/201711-07"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3681-1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2H3J-M7GR-25XJ
Vulnerability from github – Published: 2021-06-16 17:56 – Updated: 2021-10-21 17:32A carefully crafted PDF file can trigger an infinite loop while loading the file. This issue affects Apache PDFBox version 2.0.22 and prior 2.0.x versions.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.pdfbox:pdfbox"
},
"ranges": [
{
"events": [
{
"introduced": "2.0.0"
},
{
"fixed": "2.0.23"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2021-27807"
],
"database_specific": {
"cwe_ids": [
"CWE-834"
],
"github_reviewed": true,
"github_reviewed_at": "2021-03-22T18:45:15Z",
"nvd_published_at": "2021-03-19T16:15:00Z",
"severity": "MODERATE"
},
"details": "A carefully crafted PDF file can trigger an infinite loop while loading the file. This issue affects Apache PDFBox version 2.0.22 and prior 2.0.x versions.",
"id": "GHSA-2h3j-m7gr-25xj",
"modified": "2021-10-21T17:32:03Z",
"published": "2021-06-16T17:56:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-27807"
},
{
"type": "WEB",
"url": "https://github.com/apache/pdfbox/commit/5c5a837140fbb4ef78bb5ef9f29ad537c872c83e"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
},
{
"type": "WEB",
"url": "https://www.oracle.com//security-alerts/cpujul2021.html"
},
{
"type": "WEB",
"url": "https://svn.apache.org/viewvc?view=revision\u0026revision=1886911"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6PT72QOFDXLJ7PLTN66EMG5EHPTE7TFZ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6KDA2U4KL2N3XT3PM4ZJEBBA6JJIH2G4"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2AVLKAHFMPH72TTP25INPZPGX5FODK3H"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/re1e35881482e07dc2be6058d9b44483457f36133cac67956686ad9b9@%3Cnotifications.ofbiz.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rc69140d894c6a9c67a8097a25656cce59b46a5620c354ceba10543c3@%3Cnotifications.ofbiz.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/raa35746227f3f8d50fff1db9899524423a718f6f35cd39bd4769fa6c@%3Cnotifications.ofbiz.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r9ffe179385637b0b5cbdabd0246118005b4b8232909d2d14cd68ccd3@%3Ccommits.ofbiz.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r818058ff1e4b9f6bef4e5a2e74faff38cb3d3885c1e2db398bc55cfb@%3Cusers.pdfbox.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r818058ff1e4b9f6bef4e5a2e74faff38cb3d3885c1e2db398bc55cfb%40%3Cusers.pdfbox.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r7ee634c21816c69ce829d0c41f35afa2a53a99bdd3c7cce8644fdc0e@%3Cnotifications.ofbiz.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r6e067a6d83ccb6892d0ff867bd216704f21fb0b6a854dea34be04f12@%3Cnotifications.ofbiz.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r5c8e2125d18af184c80f7a986fbe47eaf0d30457cd450133adc235ac@%3Ccommits.ofbiz.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r54594251369e14c185da9662a5340a52afbbdf75d61c9c3a69c8f2e8@%3Cdev.pdfbox.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r4cbc3f6981cd0a1a482531df9d44e4c42a7f63342a7ba78b7bff8a1b@%3Cnotifications.james.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r4717f902f8bc36d47b3fa978552a25e4ed3ddc2fffb52b94fbc4ab36@%3Cusers.pdfbox.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r1d268642f8b52456ee8f876b888b8ed7a9e9568c7770789f3ded7f9e@%3Ccommits.ofbiz.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r1218e60c32829f76943ecaca79237120c2ec1ab266459d711a578b50@%3Cdev.pdfbox.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r043edc5dcf9199f7f882ed7906b41cb816753766e88b8792dbf319a9@%3Cannounce.apache.org%3E"
},
{
"type": "WEB",
"url": "https://issues.apache.org/jira/browse/PDFBOX-4892"
},
{
"type": "PACKAGE",
"url": "https://github.com/apache/pdfbox"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2021/03/19/9"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "Excessive Iteration Denial of Service in Apache PDFBox"
}
GHSA-2VWP-58HF-5Q8Q
Vulnerability from github – Published: 2022-05-13 01:23 – Updated: 2022-05-13 01:23ImageMagick 7.0.7-26 Q16 has excessive iteration in the DecodeLabImage and EncodeLabImage functions (coders/tiff.c), which results in a hang (tens of minutes) with a tiny PoC file. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted tiff file.
{
"affected": [],
"aliases": [
"CVE-2018-9133"
],
"database_specific": {
"cwe_ids": [
"CWE-834"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-03-30T08:29:00Z",
"severity": "MODERATE"
},
"details": "ImageMagick 7.0.7-26 Q16 has excessive iteration in the DecodeLabImage and EncodeLabImage functions (coders/tiff.c), which results in a hang (tens of minutes) with a tiny PoC file. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted tiff file.",
"id": "GHSA-2vwp-58hf-5q8q",
"modified": "2022-05-13T01:23:17Z",
"published": "2022-05-13T01:23:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-9133"
},
{
"type": "WEB",
"url": "https://github.com/ImageMagick/ImageMagick/issues/1072"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2020/08/msg00030.html"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3681-1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-32P9-664J-Q6J6
Vulnerability from github – Published: 2022-05-13 01:25 – Updated: 2022-05-13 01:25libjpeg 9c has a large loop because read_pixel in rdtarga.c mishandles EOF.
{
"affected": [],
"aliases": [
"CVE-2018-11813"
],
"database_specific": {
"cwe_ids": [
"CWE-834"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-06-06T03:29:00Z",
"severity": "HIGH"
},
"details": "libjpeg 9c has a large loop because read_pixel in rdtarga.c mishandles EOF.",
"id": "GHSA-32p9-664j-q6j6",
"modified": "2022-05-13T01:25:41Z",
"published": "2022-05-13T01:25:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-11813"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2019:2052"
},
{
"type": "WEB",
"url": "https://bugs.gentoo.org/727908"
},
{
"type": "WEB",
"url": "https://github.com/ChijinZ/security_advisories/blob/master/libjpeg-v9c/mail.pdf"
},
{
"type": "WEB",
"url": "https://github.com/ChijinZ/security_advisories/tree/master/libjpeg-v9c"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00015.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00015.html"
},
{
"type": "WEB",
"url": "http://www.ijg.org/files/jpegsrc.v9d.tar.gz"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
No mitigation information available for this CWE.
No CAPEC attack patterns related to this CWE.