{"cve":"CVE-2005-0039","nvd":{"published":"2005-05-10T04:00:00.000","modified":"2026-06-16T22:10:23.480","status":"Modified","description":"Certain configurations of IPsec, when using Encapsulating Security Payload (ESP) in tunnel mode, integrity protection at a higher layer, or Authentication Header (AH), allow remote attackers to decrypt IPSec communications by modifying the outer packet in ways that cause plaintext data from the inner packet to be returned in ICMP messages, as demonstrated using bit-flipping attacks and (1) Destination Address Rewriting, (2) a modified header length that causes portions of the packet to be interpreted as IP Options, or (3) a modified protocol field and source address.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://marc.info/?l=bugtraq&m=111566201610350&w=2","http://secunia.com/advisories/17938","http://securitytracker.com/id?1015320","http://www.kb.cert.org/vuls/id/302220","http://www.niscc.gov.uk/niscc/docs/al-20050509-00386.html?lang=en"],"products":["nissc:ipsec"],"source":"nvd","synced_at":"2026-10-19T19:39:29.870204089+00:00"},"epss":{"cve":"CVE-2005-0039","score":0.04081,"percentile":0.90711,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}