Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
5 results
Oct 16, 2026The fanx_fingerprint function in ssl/sslxprint.c of ssldump allocates a heap buffer for formatting FAN/1 X.509 certificate fingerprints.CVE-2026-111458 · Other software · adulau · reported by 5a6e4751-2f3f-4070-9419-94fb35b644e8Medium 6.8
The fanx_fingerprint function in ssl/sslxprint.c of ssldump allocates a heap buffer for formatting FAN/1 X.509 certificate fingerprints. The allocation size is computed as strlen(b64) + strlen(hex) + 31, but the format string "fan1:x509:server:passive:%s:sha256:%s" contains 33 fixed characters in addition to the two variable-length fields and a null terminator, requiring strlen(b64) + strlen(hex) + 34 bytes. This miscalculation results in a 3-byte heap-based buffer overflow on every invocation of the function with valid inputs. The overflow occurs because sprintf writes the full formatted string into the undersized heap buffer without bounds checking. An attacker who can supply a crafted pcap file containing a TLS X.509 certificate to a user running ssldump with FAN/1 fingerprinting enabled (for example with the -j -N options) can trigger the overflow. The resulting heap corruption may lead to denial of service through a crash or, in a worst-case scenario, arbitrary code execution in the context of the user running ssldump. The vulnerability is deterministic and requires no special privileges beyond the ability to provide input to the tool.
- Product
- ssldump
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 2, 2018On F5 BIG-IP 13.0.0-13.1.0.5, 12.1.0-12.1.3.3, or 11.2.1-11.6.3.1, administrative users by way of undisclosed methods can exploit the ssldump utility to write tCVE-2018-5519 · Network & remote access · F5 Networks, Inc. · reported by f5sirt@f5.comMedium 4.9
On F5 BIG-IP 13.0.0-13.1.0.5, 12.1.0-12.1.3.3, or 11.2.1-11.6.3.1, administrative users by way of undisclosed methods can exploit the ssldump utility to write to arbitrary file paths. For users who do not have Advanced Shell access (for example, any user when licensed for Appliance Mode), this allows more permissive file access than intended.
- Product
- BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, GTM, Link Controller, PEM, WebAccelerator, WebSafe)
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecuritytracker.comsupport.f5.com
Dec 31, 2002Buffer overflow in ssldump 0.9b2 and earlier, when running in decryption mode, allows remote attackers to execute arbitrary code via a long RSA PreMasterSecret.CVE-2002-2207 · Other software · Eric Rescorla · reported by MITREHigh 10
Buffer overflow in ssldump 0.9b2 and earlier, when running in decryption mode, allows remote attackers to execute arbitrary code via a long RSA PreMasterSecret.
- Product
- Ssldump
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 31, 2002Buffer underflow in ssldump 0.9b2 and earlier allows remote attackers to cause a denial of service (memory corruption) via a crafted SSLv2 challenge value.CVE-2002-2227 · Other software · Rtfm · reported by MITREHigh 10
Buffer underflow in ssldump 0.9b2 and earlier allows remote attackers to cause a denial of service (memory corruption) via a crafted SSLv2 challenge value.
- Product
- Ssldump
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordrtfm.comsecurityfocus.com
Feb 16, 2001Format string vulnerability in ssldump possibly allows remote attackers to cause a denial of service and possibly gain root privileges via malicious format striCVE-2001-0032 · Other software · Eric Rescorla · reported by MITREHigh 10
Format string vulnerability in ssldump possibly allows remote attackers to cause a denial of service and possibly gain root privileges via malicious format string specifiers in a URL.
- Product
- Ssldump
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecurityfocus.comsecurityfocus.com
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
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